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Google Keyword Rankings for : how is oxygen formed
1
The Origin of Oxygen in Earth's Atmosphere
https://www.scientificamerican.com/article/origin-of-oxygen-in-atmosphere/
"What it looks like is that oxygen was first produced somewhere around 2.7 billion to 2.8 billon years ago. It took up residence in atmosphere ...
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https://www.scientificamerican.com/article/origin-of-oxygen-in-atmosphere/
"What it looks like is that oxygen was first produced somewhere around 2.7 billion to 2.8 billon years ago. It took up residence in atmosphere ...
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2
Study pinpoints timing of oxygen's first appearance in Earth's ...
https://news.mit.edu/2016/oxygen-first-appearance-earth-atmosphere-0513
An MIT study finds oxygen first entered the Earth's atmosphere 2.33 billion years ago, rising rapidly over 10 million years, and eventually ...
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https://news.mit.edu/2016/oxygen-first-appearance-earth-atmosphere-0513
An MIT study finds oxygen first entered the Earth's atmosphere 2.33 billion years ago, rising rapidly over 10 million years, and eventually ...
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3
When and where did Earth get its oxygen? - EarthSky
https://earthsky.org/earth/when-where-earths-o2-oxygen-rise-began/
Oxygen in the form of the oxygen molecule (O2), produced by plants and vital for animals, is abundant in Earth's atmosphere and oceans.
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https://earthsky.org/earth/when-where-earths-o2-oxygen-rise-began/
Oxygen in the form of the oxygen molecule (O2), produced by plants and vital for animals, is abundant in Earth's atmosphere and oceans.
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4
Oxygen - Wikipedia
https://en.wikipedia.org/wiki/Oxygen
O · are extracted from air for industrial uses annually by two primary methods. · The most common method is fractional distillation of liquefied air, with ; N
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https://en.wikipedia.org/wiki/Oxygen
O · are extracted from air for industrial uses annually by two primary methods. · The most common method is fractional distillation of liquefied air, with ; N
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5
Oxygen - Science Learning Hub
https://www.sciencelearn.org.nz/resources/2701-oxygen
Oxygen is a gas at room temperature and has no colour, smell or taste. Oxygen is found naturally as a molecule. Two oxygen atoms strongly bind ...
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https://www.sciencelearn.org.nz/resources/2701-oxygen
Oxygen is a gas at room temperature and has no colour, smell or taste. Oxygen is found naturally as a molecule. Two oxygen atoms strongly bind ...
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6
How oxygen is formed in photosynthesis?
https://byjus.com/question-answer/how-oxygen-is-formed-in-photosynthesis/
Two water molecules' oxygen atoms combine to generate diatomic oxygen (O2). The production of the proton gradient within the thylakoid membrane is aided by ...
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https://byjus.com/question-answer/how-oxygen-is-formed-in-photosynthesis/
Two water molecules' oxygen atoms combine to generate diatomic oxygen (O2). The production of the proton gradient within the thylakoid membrane is aided by ...
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7
How oxygen is made - material, manufacture, making, history ...
http://www.madehow.com/Volume-4/Oxygen.html
Oxygen can be produced from a number of materials, using several different methods. The most common natural method is photo-synthesis, in which plants use ...
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http://www.madehow.com/Volume-4/Oxygen.html
Oxygen can be produced from a number of materials, using several different methods. The most common natural method is photo-synthesis, in which plants use ...
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8
Oxygen | StarDate Online
https://stardate.org/radio/program/oxygen-0
All of the oxygen atoms on Earth — and throughout the universe, for that matter — were made by stars. When a star is born, it's made mainly of ...
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https://stardate.org/radio/program/oxygen-0
All of the oxygen atoms on Earth — and throughout the universe, for that matter — were made by stars. When a star is born, it's made mainly of ...
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9
Oxygen | Discovery, Symbol, Properties, Uses, & Facts
https://www.britannica.com/science/oxygen
Oxygen has two allotropic forms, diatomic (O2) and triatomic (O3, ozone). The properties of the diatomic form suggest that six electrons ...
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https://www.britannica.com/science/oxygen
Oxygen has two allotropic forms, diatomic (O2) and triatomic (O3, ozone). The properties of the diatomic form suggest that six electrons ...
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10
Where Did Earth's Oxygen Come From? - ScienceAlert
https://www.sciencealert.com/where-did-earth-s-oxygen-come-from
But our planet's atmosphere took time to develop to its current breathable state. The earliest mix of gases to form a thick layer around our cooling planet some ...
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https://www.sciencealert.com/where-did-earth-s-oxygen-come-from
But our planet's atmosphere took time to develop to its current breathable state. The earliest mix of gases to form a thick layer around our cooling planet some ...
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11
Photosynthesis | National Geographic Society
https://www.nationalgeographic.org/encyclopedia/photosynthesis/
The ocean produces oxygen through the plants (phytoplankton, kelp, and algal plankton) that live in it. These plants produce oxygen as a byproduct of ...
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https://www.nationalgeographic.org/encyclopedia/photosynthesis/
The ocean produces oxygen through the plants (phytoplankton, kelp, and algal plankton) that live in it. These plants produce oxygen as a byproduct of ...
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12
Oxygen - Element information, properties and uses
https://www.rsc.org/periodic-table/element/8/oxygen
When living things need energy they take in oxygen for respiration. The oxygen returns to the atmosphere in the form of carbon dioxide. Oxygen gas is fairly ...
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https://www.rsc.org/periodic-table/element/8/oxygen
When living things need energy they take in oxygen for respiration. The oxygen returns to the atmosphere in the form of carbon dioxide. Oxygen gas is fairly ...
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13
How much oxygen comes from the ocean?
https://oceanservice.noaa.gov/facts/ocean-oxygen.html
At least half of the oxygen produced on Earth comes from the ocean, mostly from tiny photosynthesizing plankton. But marine life also uses ...
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https://oceanservice.noaa.gov/facts/ocean-oxygen.html
At least half of the oxygen produced on Earth comes from the ocean, mostly from tiny photosynthesizing plankton. But marine life also uses ...
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14
The origin of atmospheric oxygen on Earth - PNAS
https://www.pnas.org/doi/10.1073/pnas.061514798
Oxygen (O2) production by photosynthesis is by far the dominant global process that replenishes atmospheric and oceanic oxygen essential to sustain all aerobic ...
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https://www.pnas.org/doi/10.1073/pnas.061514798
Oxygen (O2) production by photosynthesis is by far the dominant global process that replenishes atmospheric and oceanic oxygen essential to sustain all aerobic ...
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15
Source of Half Earth's Oxygen Gets Little Credit
https://www.nationalgeographic.com/science/article/source-of-half-earth-s-oxygen-gets-little-credit
In the process of photosynthesis, phytoplankton release oxygen into the water. Half of the world's oxygen is produced via phytoplankton ...
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https://www.nationalgeographic.com/science/article/source-of-half-earth-s-oxygen-gets-little-credit
In the process of photosynthesis, phytoplankton release oxygen into the water. Half of the world's oxygen is produced via phytoplankton ...
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16
Does the ocean produce oxygen?
https://www.whoi.edu/know-your-ocean/did-you-know/does-the-ocean-produce-oxygen/
Plants, algae, and cyanobacteria all create oxygen. They do this through photosynthesis. Using energy from sunlight, they turn carbon dioxide and water into ...
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https://www.whoi.edu/know-your-ocean/did-you-know/does-the-ocean-produce-oxygen/
Plants, algae, and cyanobacteria all create oxygen. They do this through photosynthesis. Using energy from sunlight, they turn carbon dioxide and water into ...
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17
Model gives clearer idea of how oxygen came to dominate ...
https://www.washington.edu/news/2005/08/08/model-gives-clearer-idea-of-how-oxygen-came-to-dominate-earths-atmosphere/
Earth's oxygen supply originated with cyanobacteria, tiny water-dwelling organisms that survive by photosynthesis. In that process, the bacteria ...
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https://www.washington.edu/news/2005/08/08/model-gives-clearer-idea-of-how-oxygen-came-to-dominate-earths-atmosphere/
Earth's oxygen supply originated with cyanobacteria, tiny water-dwelling organisms that survive by photosynthesis. In that process, the bacteria ...
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18
How did Earth's atmosphere form? - NOAA SciJinks
https://scijinks.gov/atmosphere-formation/
So plants and some bacteria use carbon dioxide and give off oxygen, and animals use oxygen and give off carbon-dioxide—how convenient! The atmosphere upon which ...
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https://scijinks.gov/atmosphere-formation/
So plants and some bacteria use carbon dioxide and give off oxygen, and animals use oxygen and give off carbon-dioxide—how convenient! The atmosphere upon which ...
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19
Earth Without Oxygen? The Planet That Once Was | AMNH
https://www.amnh.org/explore/videos/earth-and-climate/the-rise-of-oxygen/earth-without-oxygen
The effect was profound. High in the atmosphere, the oxygen formed a shielding layer of ozone (O3), which screened out damaging ultraviolet radiation from the ...
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https://www.amnh.org/explore/videos/earth-and-climate/the-rise-of-oxygen/earth-without-oxygen
The effect was profound. High in the atmosphere, the oxygen formed a shielding layer of ozone (O3), which screened out damaging ultraviolet radiation from the ...
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20
The Mystery of Earth's Oxygen - The New York Times
https://www.nytimes.com/2013/10/03/science/earths-oxygen-a-mystery-easy-to-take-for-granted.html
That's because oxygen is an enormously friendly element, forming bonds with a wide range of molecules. It attached to the iron in rocks, for ...
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https://www.nytimes.com/2013/10/03/science/earths-oxygen-a-mystery-easy-to-take-for-granted.html
That's because oxygen is an enormously friendly element, forming bonds with a wide range of molecules. It attached to the iron in rocks, for ...
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21
The Natural History of Oxygen - NCBI
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2195461/pdf/5.pdf
There are other mechanisms for He formation but the above is believed to be the most important. As the hydrogen is consumed in the core of the star to form ...
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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2195461/pdf/5.pdf
There are other mechanisms for He formation but the above is believed to be the most important. As the hydrogen is consumed in the core of the star to form ...
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22
Oxygen in Stars | Center for Astrophysics - CfA Harvard
https://pweb.cfa.harvard.edu/news/oxygen-stars
Oxygen is the third most abundant element in the universe, after hydrogen and helium. It is an important constituent of the clouds of gas ...
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https://pweb.cfa.harvard.edu/news/oxygen-stars
Oxygen is the third most abundant element in the universe, after hydrogen and helium. It is an important constituent of the clouds of gas ...
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23
The first organism to use oxygen may have appeared ...
https://www.science.org/content/article/first-organism-use-oxygen-may-have-appeared-surprisingly-early
And some evidence suggests cyanobacteria, the earliest photosynthetic organisms to release oxygen gas as a waste product—although not use it—may have arisen as ...
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https://www.science.org/content/article/first-organism-use-oxygen-may-have-appeared-surprisingly-early
And some evidence suggests cyanobacteria, the earliest photosynthetic organisms to release oxygen gas as a waste product—although not use it—may have arisen as ...
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24
The Great Oxidation Event: How Cyanobacteria Changed Life
https://asm.org/Articles/2022/February/The-Great-Oxidation-Event-How-Cyanobacteria-Change
Gradually, the accumulated oxygen started escaping into the atmosphere, where it reacted with methane. As more oxygen escaped, methane was ...
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https://asm.org/Articles/2022/February/The-Great-Oxidation-Event-How-Cyanobacteria-Change
Gradually, the accumulated oxygen started escaping into the atmosphere, where it reacted with methane. As more oxygen escaped, methane was ...
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25
The rise of atmospheric oxygen - Nature
https://www.nature.com/articles/nature06587
Biomarker evidence for cyanobacteria (2-methylhopanes) and their waste product oxygen (in the form of steranes, which probably require ...
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https://www.nature.com/articles/nature06587
Biomarker evidence for cyanobacteria (2-methylhopanes) and their waste product oxygen (in the form of steranes, which probably require ...
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26
Evolution and Oxygen - YouTube
https://www.youtube.com/watch?v=DE4CPmTH3xg
ScienceOnline
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https://www.youtube.com/watch?v=DE4CPmTH3xg
ScienceOnline
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27
The Chemistry of Oxygen and Sulfur
https://chemed.chem.purdue.edu/genchem/topicreview/bp/ch10/group6.php
The O2 molecule is not the only elemental form of oxygen. In the presence of lightning or another source of a spark, O2 molecules dissociate to form oxygen ...
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https://chemed.chem.purdue.edu/genchem/topicreview/bp/ch10/group6.php
The O2 molecule is not the only elemental form of oxygen. In the presence of lightning or another source of a spark, O2 molecules dissociate to form oxygen ...
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28
How Earth Got its Oxygen | Live Science
https://www.livescience.com/5515-earth-oxygen.html
Most scientists believe the amount of atmospheric oxygen was insignificant up until about 2.4 billion years ago when the Great Oxidation Event ( ...
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https://www.livescience.com/5515-earth-oxygen.html
Most scientists believe the amount of atmospheric oxygen was insignificant up until about 2.4 billion years ago when the Great Oxidation Event ( ...
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29
Oxygen - Chemistry for Kids: Elements - Ducksters
https://www.ducksters.com/science/chemistry/oxygen.php
This is called a diatomic gas. In this form oxygen is a colorless, odorless, tasteless gas. Oxygen also exists as the allotrope ozone (O3). Ozone ...
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https://www.ducksters.com/science/chemistry/oxygen.php
This is called a diatomic gas. In this form oxygen is a colorless, odorless, tasteless gas. Oxygen also exists as the allotrope ozone (O3). Ozone ...
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30
Oxygen can form directly from carbon dioxide in upper ...
https://www.sciencedaily.com/releases/2014/10/141003092259.htm
Scientists have now shown that oxygen can be formed directly from carbon dioxide in the upper atmosphere, changing models of how the atmosphere ...
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https://www.sciencedaily.com/releases/2014/10/141003092259.htm
Scientists have now shown that oxygen can be formed directly from carbon dioxide in the upper atmosphere, changing models of how the atmosphere ...
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31
How is oxygen formed? - Alexa Answers
https://alexaanswers.amazon.com/question/6GxkXB4sdERUsgrunUvOD9/ref=cbqa_pqd_sim_q
Aug 22, 2021 -- Oxygen is generated during photosynthesis by plants and many types of microbes. Plants both use oxygen and produce it. Oxygen can also form ...
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https://alexaanswers.amazon.com/question/6GxkXB4sdERUsgrunUvOD9/ref=cbqa_pqd_sim_q
Aug 22, 2021 -- Oxygen is generated during photosynthesis by plants and many types of microbes. Plants both use oxygen and produce it. Oxygen can also form ...
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32
Oxygen Formation in the Light of Gamma Beams
https://www.energy.gov/science/np/articles/oxygen-formation-light-gamma-beams
The carbon/oxygen ratio is directly related to the rate of the (12C + α → + 16O + ϒ) fusion reaction in stars. Determining this fusion rate has ...
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https://www.energy.gov/science/np/articles/oxygen-formation-light-gamma-beams
The carbon/oxygen ratio is directly related to the rate of the (12C + α → + 16O + ϒ) fusion reaction in stars. Determining this fusion rate has ...
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33
Oxygen - Energy Education
https://energyeducation.ca/encyclopedia/Oxygen
Oxygen exists in two elemental forms: molecular oxygen (O2) and ozone (O3). It also exists in countless compounds with other elements. Compounds of oxygen are ...
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https://energyeducation.ca/encyclopedia/Oxygen
Oxygen exists in two elemental forms: molecular oxygen (O2) and ozone (O3). It also exists in countless compounds with other elements. Compounds of oxygen are ...
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34
Oxygen first formed in the universe at least 13 billion years ago
https://www.chemistryworld.com/news/oxygen-first-formed-in-the-universe-at-least-13-billion-years-ago/2500537.article
Oxygen first formed in the universe at least 13 billion years ago ... An international astronomy team has made the earliest known discovery of ...
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https://www.chemistryworld.com/news/oxygen-first-formed-in-the-universe-at-least-13-billion-years-ago/2500537.article
Oxygen first formed in the universe at least 13 billion years ago ... An international astronomy team has made the earliest known discovery of ...
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35
How do plants produce oxygen? | Culture Online - UCL
https://www.ucl.ac.uk/culture-online/ask-expert/your-questions-answered/how-do-plants-produce-oxygen
› your-questions-answered › how...
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https://www.ucl.ac.uk/culture-online/ask-expert/your-questions-answered/how-do-plants-produce-oxygen
› your-questions-answered › how...
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36
Oxygen Atom - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/earth-and-planetary-sciences/oxygen-atom
The alteration of oxygen atoms or ions into hydroxyls, which is the constitution of water or lattice water, and the introduction of water molecules hydrating ...
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https://www.sciencedirect.com/topics/earth-and-planetary-sciences/oxygen-atom
The alteration of oxygen atoms or ions into hydroxyls, which is the constitution of water or lattice water, and the introduction of water molecules hydrating ...
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37
Why is Earth so rich in oxygen? The answer is simpler than we ...
https://www.newscientist.com/article/2226874-why-is-earth-so-rich-in-oxygen-the-answer-is-simpler-than-we-thought/
It took billions of years for Earth's air to grow rich in oxygen, but it may have been destined to do so once photosynthetic bacteria began ...
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https://www.newscientist.com/article/2226874-why-is-earth-so-rich-in-oxygen-the-answer-is-simpler-than-we-thought/
It took billions of years for Earth's air to grow rich in oxygen, but it may have been destined to do so once photosynthetic bacteria began ...
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38
Out of Thin Air - NASA
https://www.nasa.gov/topics/technology/features/atomic_oxygen.html
O3 is ozone, such as occurs in Earth's upper atmosphere, and O (one atom), is atomic oxygen. Atomic oxygen doesn't exist naturally for very long ...
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https://www.nasa.gov/topics/technology/features/atomic_oxygen.html
O3 is ozone, such as occurs in Earth's upper atmosphere, and O (one atom), is atomic oxygen. Atomic oxygen doesn't exist naturally for very long ...
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39
The History of Earth's Atmosphere
https://askanearthspacescientist.asu.edu/explore/early-atmosphere
The oxygen atoms in Earth's atmosphere were first formed in an old star, along with all the other elements that make up the Earth. When that star exploded (a ...
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https://askanearthspacescientist.asu.edu/explore/early-atmosphere
The oxygen atoms in Earth's atmosphere were first formed in an old star, along with all the other elements that make up the Earth. When that star exploded (a ...
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40
Cyanobacteria and the Formation of Oxygen
http://butane.chem.uiuc.edu/pshapley/environmental/l30/1.html
Currently, nearly 99% of primary production of oxygen comes from eukaryotic algae but prokaryotic bacteria were responsible for forming the oxygen on the Earth.
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http://butane.chem.uiuc.edu/pshapley/environmental/l30/1.html
Currently, nearly 99% of primary production of oxygen comes from eukaryotic algae but prokaryotic bacteria were responsible for forming the oxygen on the Earth.
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41
How did oxygen form on early Earth? - Quora
https://www.quora.com/How-did-oxygen-form-on-early-Earth
Oxygen gas, which the current life on the Earth depends on, came from reactions of those rocks that released the oxygen, and much of it as ...
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https://www.quora.com/How-did-oxygen-form-on-early-Earth
Oxygen gas, which the current life on the Earth depends on, came from reactions of those rocks that released the oxygen, and much of it as ...
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42
Evolution of the Atmosphere - [email protected]
https://www.globalchange.umich.edu/globalchange1/current/lectures/Perry_Samson_lectures/evolution_atm/
The Biological Era - The Formation of Atmospheric Oxygen ... The biological era was marked by the simultaneous decrease in atmospheric carbon dioxide (CO2) and ...
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https://www.globalchange.umich.edu/globalchange1/current/lectures/Perry_Samson_lectures/evolution_atm/
The Biological Era - The Formation of Atmospheric Oxygen ... The biological era was marked by the simultaneous decrease in atmospheric carbon dioxide (CO2) and ...
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43
The Age of Oxygen - Forces of Change
https://forces.si.edu/atmosphere/02_02_06.html
Early in the Carboniferous Period, Earth's climate was warm. Later, glaciers formed at the poles, while equatorial regions were often warm and humid. Earth's ...
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https://forces.si.edu/atmosphere/02_02_06.html
Early in the Carboniferous Period, Earth's climate was warm. Later, glaciers formed at the poles, while equatorial regions were often warm and humid. Earth's ...
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44
The origin of atmospheric oxygen on Earth - Esalq
http://www.esalq.usp.br/lepse/imgs/conteudo_thumb/mini/The-origin-of-atmospheric-oxygen-on-Earth-The-onnovation-of-oxygenic-photosynthesis.pdf
First, we present a thermodynamic analysis showing that bicarbonate (formed by dis- solution of CO2) is a more efficient alternative substrate than water for O2 ...
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http://www.esalq.usp.br/lepse/imgs/conteudo_thumb/mini/The-origin-of-atmospheric-oxygen-on-Earth-The-onnovation-of-oxygenic-photosynthesis.pdf
First, we present a thermodynamic analysis showing that bicarbonate (formed by dis- solution of CO2) is a more efficient alternative substrate than water for O2 ...
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45
Oxygen | COSMOS
https://astronomy.swin.edu.au/cosmos/o/Oxygen
Oxygen is the eighth element on the periodic table and as such has eight protons in its nucleus. Oxygen is produced in the cores of stars through the fusion ...
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https://astronomy.swin.edu.au/cosmos/o/Oxygen
Oxygen is the eighth element on the periodic table and as such has eight protons in its nucleus. Oxygen is produced in the cores of stars through the fusion ...
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46
It's Elemental - The Element Oxygen
https://education.jlab.org/itselemental/ele008.html
Joseph Priestley and Carl Wilhelm Scheele both independently discovered oxygen, but Priestly is usually given credit for the discovery. They were both able to ...
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https://education.jlab.org/itselemental/ele008.html
Joseph Priestley and Carl Wilhelm Scheele both independently discovered oxygen, but Priestly is usually given credit for the discovery. They were both able to ...
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47
Chemistry of Oxygen (Z=8)
https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Supplemental_Modules_and_Websites_(Inorganic_Chemistry)/Descriptive_Chemistry/Elements_Organized_by_Block/2_p-Block_Elements/Group_16%3A_The_Oxygen_Family_(The_Chalcogens)/Z008_Chemistry_of_Oxygen_(Z8)
Sodium: Reacts with oxygen to form a white mixture of sodium oxide and sodium peroxide. The reactions are shown below.
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https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Supplemental_Modules_and_Websites_(Inorganic_Chemistry)/Descriptive_Chemistry/Elements_Organized_by_Block/2_p-Block_Elements/Group_16%3A_The_Oxygen_Family_(The_Chalcogens)/Z008_Chemistry_of_Oxygen_(Z8)
Sodium: Reacts with oxygen to form a white mixture of sodium oxide and sodium peroxide. The reactions are shown below.
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48
Oxygen - Glossary of Meteorology
https://glossary.ametsoc.org/wiki/Oxygen
Atomic oxygen is formed in the photolysis of molecular oxygen, O2; ozone, O3; or nitrogen dioxide, NO2, in the atmosphere.
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https://glossary.ametsoc.org/wiki/Oxygen
Atomic oxygen is formed in the photolysis of molecular oxygen, O2; ozone, O3; or nitrogen dioxide, NO2, in the atmosphere.
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49
Dissolved Oxygen | US EPA
https://www.epa.gov/caddis-vol2/dissolved-oxygen
Dissolved oxygen (DO) refers to the concentration of oxygen gas incorporated in water. Oxygen enters water by direct absorption from the ...
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https://www.epa.gov/caddis-vol2/dissolved-oxygen
Dissolved oxygen (DO) refers to the concentration of oxygen gas incorporated in water. Oxygen enters water by direct absorption from the ...
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50
Which came first: complex life or high atmospheric oxygen?
https://news.berkeley.edu/2018/01/03/which-came-first-complex-life-or-high-atmospheric-oxygen/
“The oxygenation of the deep ocean and our interpretation of this as ... with oxygen to form iron oxides similar to how iron metal rusts.
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https://news.berkeley.edu/2018/01/03/which-came-first-complex-life-or-high-atmospheric-oxygen/
“The oxygenation of the deep ocean and our interpretation of this as ... with oxygen to form iron oxides similar to how iron metal rusts.
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51
The formation of atomic oxygen and hydrogen in atmospheric ...
https://iopscience.iop.org/article/10.1088/1361-6595/abab55
The formation of atomic oxygen and hydrogen in atmospheric pressure plasmas containing humidity: picosecond two-photon absorption laser induced fluorescence ...
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https://iopscience.iop.org/article/10.1088/1361-6595/abab55
The formation of atomic oxygen and hydrogen in atmospheric pressure plasmas containing humidity: picosecond two-photon absorption laser induced fluorescence ...
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52
How do trees give earth all its oxygen?
https://wtamu.edu/~cbaird/sq/2013/01/05/how-do-trees-give-earth-all-its-oxygen/
According to National Geographic, about 70% of the oxygen in the atmosphere comes from marine plants and plant-like organisms. These ocean- ...
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https://wtamu.edu/~cbaird/sq/2013/01/05/how-do-trees-give-earth-all-its-oxygen/
According to National Geographic, about 70% of the oxygen in the atmosphere comes from marine plants and plant-like organisms. These ocean- ...
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53
6A - Chalcogens - The Parts of the Periodic Table
https://www.angelo.edu/faculty/kboudrea/periodic/periodic_main6.htm
Oxygen forms compounds with all of the other element except for the lighter noble gases. It is found in many mineral ores, in the form of oxides (O2-), sulfates ...
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https://www.angelo.edu/faculty/kboudrea/periodic/periodic_main6.htm
Oxygen forms compounds with all of the other element except for the lighter noble gases. It is found in many mineral ores, in the form of oxides (O2-), sulfates ...
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54
How is Ozone Formed? - SCDHEC
https://scdhec.gov/environment/your-air/most-common-air-pollutants/about-ozone/how-ozone-formed
Ozone is a molecule made up of three oxygen atoms, often referenced as O3. Ozone is formed when heat and sunlight cause chemical reactions between oxides of ...
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https://scdhec.gov/environment/your-air/most-common-air-pollutants/about-ozone/how-ozone-formed
Ozone is a molecule made up of three oxygen atoms, often referenced as O3. Ozone is formed when heat and sunlight cause chemical reactions between oxides of ...
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55
Speeding Up Key Oxygen-Oxygen Bond-Formation Step in ...
https://www.bnl.gov/newsroom/news.php?a=111840
Forming the oxygen-oxygen bond ... In water oxidation, four protons and four electrons—required in a subsequent reaction to convert carbon dioxide into usable ...
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https://www.bnl.gov/newsroom/news.php?a=111840
Forming the oxygen-oxygen bond ... In water oxidation, four protons and four electrons—required in a subsequent reaction to convert carbon dioxide into usable ...
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56
How Do Plants Make Oxygen? - Greentumble
https://greentumble.com/how-do-plants-make-oxygen/
Plants make oxygen through a process called photosynthesis. Oxygen is produced as a waste product for the plant as the plant makes its own ...
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https://greentumble.com/how-do-plants-make-oxygen/
Plants make oxygen through a process called photosynthesis. Oxygen is produced as a waste product for the plant as the plant makes its own ...
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57
CHEBI:15379 - dioxygen - EMBL-EBI
https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:15379
Oxygen makes up almost half of the Earth's crust in the form of oxides.Many major classes of organic molecules in living organisms contain ...
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https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:15379
Oxygen makes up almost half of the Earth's crust in the form of oxides.Many major classes of organic molecules in living organisms contain ...
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58
What is Oxygen? | Formula & Levels - Video & Lesson Transcript
https://study.com/learn/lesson/what-is-oxygen-formula-levels.html
O2, also known as dioxygen, is a molecule of two oxygen atoms that share two pairs of electrons. This form of oxygen is the second most abundant ...
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https://study.com/learn/lesson/what-is-oxygen-formula-levels.html
O2, also known as dioxygen, is a molecule of two oxygen atoms that share two pairs of electrons. This form of oxygen is the second most abundant ...
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59
Molecular Oxygen Formation in Interstellar Ices Does Not ...
https://pubs.acs.org/doi/10.1021/acs.jpclett.8b00328
The formation of molecular oxygen in and on amorphous ice in the interstellar medium requires oxygen diffusion to take place.
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https://pubs.acs.org/doi/10.1021/acs.jpclett.8b00328
The formation of molecular oxygen in and on amorphous ice in the interstellar medium requires oxygen diffusion to take place.
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60
How Oxygen Gas Is Produced During Photosynthesis?
https://sciencing.com/oxygen-gas-produced-during-photosynthesis-6365699.html
Oxygen atoms are created during the light process of photosynthesis, and two oxygen atoms then combine to form oxygen gas.
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https://sciencing.com/oxygen-gas-produced-during-photosynthesis-6365699.html
Oxygen atoms are created during the light process of photosynthesis, and two oxygen atoms then combine to form oxygen gas.
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61
Oxygen - Chemistry | Fandom
https://chemistry.fandom.com/wiki/Oxygen
It can be formed when green plants carry out photosynthesis, a process in which carbon dioxide is converted into oxygen by the plants.
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https://chemistry.fandom.com/wiki/Oxygen
It can be formed when green plants carry out photosynthesis, a process in which carbon dioxide is converted into oxygen by the plants.
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62
Methods for obtaining oxygen - MEL Chemistry
https://melscience.com/US-en/articles/methods-obtaining-oxygen/
A chemical reaction takes place, forming two gases. Hydrogen collects in the cup with the cathode, and oxygen in the cup with the anode.
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https://melscience.com/US-en/articles/methods-obtaining-oxygen/
A chemical reaction takes place, forming two gases. Hydrogen collects in the cup with the cathode, and oxygen in the cup with the anode.
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63
Atmospheric oxygen can be created without plant life
https://arstechnica.com/science/2014/10/atmospheric-oxygen-can-be-created-without-plant-life/
“Our results indicate that O2 can be formed by carbon dioxide dissociation in a one step process. The same process can be applied in other ...
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https://arstechnica.com/science/2014/10/atmospheric-oxygen-can-be-created-without-plant-life/
“Our results indicate that O2 can be formed by carbon dioxide dissociation in a one step process. The same process can be applied in other ...
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64
Oxygen in Earth's Atmosphere
https://www.ontariobeneathourfeet.com/oxygen
Oxygen in the Earth's atmosphere is part of the atmosphere system. Early in the history of the Earth, primitive algae created oxygen, using ...
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https://www.ontariobeneathourfeet.com/oxygen
Oxygen in the Earth's atmosphere is part of the atmosphere system. Early in the history of the Earth, primitive algae created oxygen, using ...
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65
Oxygen and Our Mineral World | Rock & Gem Magazine
https://www.rockngem.com/oxygen-and-our-mineral-world/
Eventually, as cyanobacteria and later complex organisms continued to release free oxygen, a point was reached where oxygen formed a significant ...
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https://www.rockngem.com/oxygen-and-our-mineral-world/
Eventually, as cyanobacteria and later complex organisms continued to release free oxygen, a point was reached where oxygen formed a significant ...
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66
Fossil fuel formation: Key to atmosphere's oxygen?
https://news.wisc.edu/fossil-fuel-formation-key-to-atmospheres-oxygen/
In green plants, photosynthesis separates carbon dioxide into molecular oxygen (which is released to the atmosphere), and carbon (which is ...
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https://news.wisc.edu/fossil-fuel-formation-key-to-atmospheres-oxygen/
In green plants, photosynthesis separates carbon dioxide into molecular oxygen (which is released to the atmosphere), and carbon (which is ...
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67
Dissolved Oxygen - Chesapeake Bay Program
https://www.chesapeakebay.net/discover/ecosystem/dissolved-oxygen
Learn how much oxygen the Bay's living creatures need to survive, and what happens when low-oxygen areas form.
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https://www.chesapeakebay.net/discover/ecosystem/dissolved-oxygen
Learn how much oxygen the Bay's living creatures need to survive, and what happens when low-oxygen areas form.
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68
Intro to photosynthesis (article) - Khan Academy
https://www.khanacademy.org/science/ap-biology/cellular-energetics/photosynthesis/a/intro-to-photosynthesis
In photosynthesis, solar energy is harvested and converted to chemical energy in the form of glucose using water and carbon dioxide. Oxygen is released as a ...
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https://www.khanacademy.org/science/ap-biology/cellular-energetics/photosynthesis/a/intro-to-photosynthesis
In photosynthesis, solar energy is harvested and converted to chemical energy in the form of glucose using water and carbon dioxide. Oxygen is released as a ...
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69
Earth's oxygen levels - OCR 21st Century - BBC Bitesize - BBC
https://www.bbc.co.uk/bitesize/guides/z82gng8/revision/5
Oxygen levels are generally thought to have increased dramatically about 2.3 billion years ago. Photosynthesis. by ancient bacteria may have produced oxygen ...
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https://www.bbc.co.uk/bitesize/guides/z82gng8/revision/5
Oxygen levels are generally thought to have increased dramatically about 2.3 billion years ago. Photosynthesis. by ancient bacteria may have produced oxygen ...
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70
Oxygen
https://www.cs.mcgill.ca/~rwest/wikispeedia/wpcd/wp/o/Oxygen.htm
In nature, singlet oxygen is commonly formed from water during photosynthesis, using the energy of sunlight. It is also produced by the immune system as a ...
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https://www.cs.mcgill.ca/~rwest/wikispeedia/wpcd/wp/o/Oxygen.htm
In nature, singlet oxygen is commonly formed from water during photosynthesis, using the energy of sunlight. It is also produced by the immune system as a ...
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71
The origin and geological history of oxygen - WorldOfChemicals
https://www.worldofchemicals.com/437/chemistry-articles/the-origin-and-geological-history-of-oxygen.html
Oxygen combines directly with various elements to form oxides. Oxygen is present as important constituent of many acids, hydroxides, and various other compounds ...
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https://www.worldofchemicals.com/437/chemistry-articles/the-origin-and-geological-history-of-oxygen.html
Oxygen combines directly with various elements to form oxides. Oxygen is present as important constituent of many acids, hydroxides, and various other compounds ...
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72
If water is made up of hydrogen and oxygen, two gasses, then ...
https://scienceline.ucsb.edu/getkey.php?key=2894
Oxygen gas and hydrogen gas are both formed from pairs of oxygen or hydrogen atoms. (Let's call them dioxygen and dihydrogen, to prevent ...
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https://scienceline.ucsb.edu/getkey.php?key=2894
Oxygen gas and hydrogen gas are both formed from pairs of oxygen or hydrogen atoms. (Let's call them dioxygen and dihydrogen, to prevent ...
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73
50 to 100 Million Years Earlier Than Scientists Thought | NSF
https://www.nsf.gov/news/news_summ.jsp?cntn_id=110104
Oxygen has been found before this formation of iron oxide, or rust, in Western Australia. Credit and Larger Version; View Additional Multimedia.
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https://www.nsf.gov/news/news_summ.jsp?cntn_id=110104
Oxygen has been found before this formation of iron oxide, or rust, in Western Australia. Credit and Larger Version; View Additional Multimedia.
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74
Oxygen: Origin in the Universe and Brief Chemistry
https://www.eurekaselect.com/150696/chapter/oxygen:-origin-in-the-universe-and-brief-chemistr
Atomic oxygen is chemically and biologically reactive and primarily exists as molecular oxygen (O2, two like atoms combined), or in combination with certain ...
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https://www.eurekaselect.com/150696/chapter/oxygen:-origin-in-the-universe-and-brief-chemistr
Atomic oxygen is chemically and biologically reactive and primarily exists as molecular oxygen (O2, two like atoms combined), or in combination with certain ...
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75
Oxygen | Encyclopedia.com
https://www.encyclopedia.com/science-and-technology/chemistry/compounds-and-elements/oxygen
Allotrope —One of two or more forms of an element. Combustion —A form of oxidation that occurs so rapidly that noticeable heat and light are produced. Cracking ...
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https://www.encyclopedia.com/science-and-technology/chemistry/compounds-and-elements/oxygen
Allotrope —One of two or more forms of an element. Combustion —A form of oxidation that occurs so rapidly that noticeable heat and light are produced. Cracking ...
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76
The rise and fall of oxygen - The Conversation
https://theconversation.com/the-rise-and-fall-of-oxygen-18954
› the-rise-and-fall-of-oxyge...
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https://theconversation.com/the-rise-and-fall-of-oxygen-18954
› the-rise-and-fall-of-oxyge...
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77
Oxygen and Life part II
http://homework.uoregon.edu/pub/emj/121/lectures/oxygen.html
Chemical building blocks of life could not have formed in the presence of atmospheric oxygen. Chemical reactions that yield amino acids are inhibited by ...
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http://homework.uoregon.edu/pub/emj/121/lectures/oxygen.html
Chemical building blocks of life could not have formed in the presence of atmospheric oxygen. Chemical reactions that yield amino acids are inhibited by ...
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78
How to Make Water From Hydrogen and Oxygen - ThoughtCo
https://www.thoughtco.com/making-water-from-hydrogen-and-oxygen-4021101
During combustion, oxygen is added to a molecule, which produces water in this reaction. Combustion also releases a lot of energy. Heat and ...
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https://www.thoughtco.com/making-water-from-hydrogen-and-oxygen-4021101
During combustion, oxygen is added to a molecule, which produces water in this reaction. Combustion also releases a lot of energy. Heat and ...
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79
Ozone destruction due to the recombination of oxygen atoms
https://aip.scitation.org/doi/10.1063/5.0064361
Atmospheric oxygen is both the basis of life and its protection from the UV solar radiation. UV light fragments oxygen (O2) and ozone (O3) molecules to form ...
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https://aip.scitation.org/doi/10.1063/5.0064361
Atmospheric oxygen is both the basis of life and its protection from the UV solar radiation. UV light fragments oxygen (O2) and ozone (O3) molecules to form ...
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80
Oxygen Molecule - Properties, Structure, and its Uses - Turito
https://www.turito.com/blog/physics/oxygen-molecule
The atomic number of the molecular form of oxygen is 8, represented by the chemical symbol O. The nucleus of an oxygen atom consists of ...
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https://www.turito.com/blog/physics/oxygen-molecule
The atomic number of the molecular form of oxygen is 8, represented by the chemical symbol O. The nucleus of an oxygen atom consists of ...
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81
Oxygen Molecules Discovered in Deep Space for First Time
https://www.space.com/12494-oxygen-molecules-space-herschel.html
Individual atoms of oxygen (called atomic oxygen) are common in space, particularly around massive stars. But molecular oxygen, which is formed ...
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https://www.space.com/12494-oxygen-molecules-space-herschel.html
Individual atoms of oxygen (called atomic oxygen) are common in space, particularly around massive stars. But molecular oxygen, which is formed ...
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82
Oxygen - New World Encyclopedia
https://www.newworldencyclopedia.org/entry/Oxygen
Readily combining with other elements, oxygen can form a variety of compounds, as noted below. It is classified as a highly electronegative element—in other ...
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https://www.newworldencyclopedia.org/entry/Oxygen
Readily combining with other elements, oxygen can form a variety of compounds, as noted below. It is classified as a highly electronegative element—in other ...
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83
History of Earth's Atmosphere II | Earth Science - Visionlearning
https://www.visionlearning.com/en/library/Earth-Science/6/History-of-Earths-Atmosphere-II/203
Only one significant source of oxygen gas exists in the universe: biological photosynthesis. Organisms that photosynthesize produce oxygen gas by splitting ...
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https://www.visionlearning.com/en/library/Earth-Science/6/History-of-Earths-Atmosphere-II/203
Only one significant source of oxygen gas exists in the universe: biological photosynthesis. Organisms that photosynthesize produce oxygen gas by splitting ...
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84
Scientists discover new way to make water - Phys.org
https://phys.org/news/2007-10-scientists.html
The negatively charged oxygen ions combine with positively charged hydrogen ions to form water and release electrical energy.
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https://phys.org/news/2007-10-scientists.html
The negatively charged oxygen ions combine with positively charged hydrogen ions to form water and release electrical energy.
→ Check Latest Keyword Rankings ←
85
Singlet Oxygen Metabolism: From Genesis to Signaling
https://www.frontiersin.org/articles/10.3389/fpls.2019.01640/full
In plants, 1O2 is primarily generated as a byproduct of photosynthesis in the photosystem II reaction center (PSII RC) and the light-harvesting ...
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https://www.frontiersin.org/articles/10.3389/fpls.2019.01640/full
In plants, 1O2 is primarily generated as a byproduct of photosynthesis in the photosystem II reaction center (PSII RC) and the light-harvesting ...
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86
Magma and Oxygen | A Moment of Science
https://indianapublicmedia.org/amomentofscience/magma-and-oxygen.php
Today on A Moment of Science were going to explain why Earth's air contains oxygen. You may already know that Earth's oxygen was made by ...
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https://indianapublicmedia.org/amomentofscience/magma-and-oxygen.php
Today on A Moment of Science were going to explain why Earth's air contains oxygen. You may already know that Earth's oxygen was made by ...
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87
The slow build up of Oxygen in the Earth's Atmosphere
https://www.windows2universe.org/earth/past/oxygen_buildup.html
The formation of life on Earth played a very large role in the build up of oxygen in the environment. As early as 3.5 billion years ago, bacteria began to ...
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https://www.windows2universe.org/earth/past/oxygen_buildup.html
The formation of life on Earth played a very large role in the build up of oxygen in the environment. As early as 3.5 billion years ago, bacteria began to ...
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88
The early history of oxygen and ozone in the atmosphere
https://link.springer.com/article/10.1007/BF00876630
There may have been three stages in the growth of oxygen in the terrestrial atmosphere. Prior to the origin of photosynthesis the only source of oxygen was ...
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https://link.springer.com/article/10.1007/BF00876630
There may have been three stages in the growth of oxygen in the terrestrial atmosphere. Prior to the origin of photosynthesis the only source of oxygen was ...
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89
What is dissolved oxygen (DO)? - Apera Instruments
https://aperainst.com/blog/what-is-dissolved-oxygen-do/
Dissolved oxygen (DO) is oxygen gas (O2) that is dissolved in water. Gases in the atmosphere, such as oxygen, nitrogen and carbon dioxide, ...
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https://aperainst.com/blog/what-is-dissolved-oxygen-do/
Dissolved oxygen (DO) is oxygen gas (O2) that is dissolved in water. Gases in the atmosphere, such as oxygen, nitrogen and carbon dioxide, ...
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90
New abiotic pathway for the formation of oxygen
https://www.gu.se/en/news/new-abiotic-pathway-for-the-formation-of-oxygen
How does oxygen form? On earth, the main explanation involves the biological process of photosynthesis, which was developed by cyanobacteria ...
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https://www.gu.se/en/news/new-abiotic-pathway-for-the-formation-of-oxygen
How does oxygen form? On earth, the main explanation involves the biological process of photosynthesis, which was developed by cyanobacteria ...
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91
Ozone, O3, is a form of oxygen; a blue gas with a pungent ...
https://www.calstatela.edu/sites/default/files/dept/chem/07summer/158/25-words-ozone.pdf
This combines with O2 to form the ozone, which is an air pollutant. The ozone made up of three fairly stable oxygen atoms (O3). It prevents ultraviolet light.
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https://www.calstatela.edu/sites/default/files/dept/chem/07summer/158/25-words-ozone.pdf
This combines with O2 to form the ozone, which is an air pollutant. The ozone made up of three fairly stable oxygen atoms (O3). It prevents ultraviolet light.
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92
What Happens to Oxygen in Space?
https://now.northropgrumman.com/what-happens-to-oxygen-in-space/
On Earth, O2 is abundant. It's formed by plants, algae and phytoplankton during photosynthesis as they take in CO2 and convert it into energy.
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https://now.northropgrumman.com/what-happens-to-oxygen-in-space/
On Earth, O2 is abundant. It's formed by plants, algae and phytoplankton during photosynthesis as they take in CO2 and convert it into energy.
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93
Scientists discover new way to make water | Chemistry at Illinois
https://chemistry.illinois.edu/news/2007-12-31/scientists-discover-new-way-make-water
The negatively charged oxygen ions combine with positively charged hydrogen ions to form water and release electrical energy.
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https://chemistry.illinois.edu/news/2007-12-31/scientists-discover-new-way-make-water
The negatively charged oxygen ions combine with positively charged hydrogen ions to form water and release electrical energy.
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94
What the Rise of Oxygen on Early Earth Tells Us About Alien ...
https://earth.yale.edu/news/what-rise-oxygen-early-earth-tells-us-about-alien-life-other-planets
The oxygenation of the Earth's ocean and atmosphere was the result of photosynthesis, a process used by plants and other organisms to convert ...
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https://earth.yale.edu/news/what-rise-oxygen-early-earth-tells-us-about-alien-life-other-planets
The oxygenation of the Earth's ocean and atmosphere was the result of photosynthesis, a process used by plants and other organisms to convert ...
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95
OXYGEN FROM WATER - The University of Oklahoma
https://www.ou.edu/class/che-design/a-design/projects-2003/OXYGEN%20FROM%20WATER-SUMMARY.pdf
In this process a catalyst discovered by a chemistry professor at Yale University is used19. An illustration of the dehydrated form of the catalyst can be seen ...
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https://www.ou.edu/class/che-design/a-design/projects-2003/OXYGEN%20FROM%20WATER-SUMMARY.pdf
In this process a catalyst discovered by a chemistry professor at Yale University is used19. An illustration of the dehydrated form of the catalyst can be seen ...
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96
Oxygen in atmosphere has been formed by - Toppr
https://www.toppr.com/ask/question/oxygen-in-atmosphere-has-been-formed-by-2/
Oxygen in atmosphere has been formed by · Evaporation of water · Photosynthesis of plants · Metabolism of microorganism · Decaying organism · Loss of water by ...
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https://www.toppr.com/ask/question/oxygen-in-atmosphere-has-been-formed-by-2/
Oxygen in atmosphere has been formed by · Evaporation of water · Photosynthesis of plants · Metabolism of microorganism · Decaying organism · Loss of water by ...
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97
Oxygen and Carbon Dioxide History Affirms Divine Creation
https://reasons.org/explore/blogs/todays-new-reason-to-believe/oxygen-history-affirms-divine-creation
Consequently, based on cerium abundances, atmospheric oxygen level estimates from 2.5–4.0 billion years after Earth's formation range from 0.02– ...
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https://reasons.org/explore/blogs/todays-new-reason-to-believe/oxygen-history-affirms-divine-creation
Consequently, based on cerium abundances, atmospheric oxygen level estimates from 2.5–4.0 billion years after Earth's formation range from 0.02– ...
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