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Through oxygen cycle.
Humans and animals take in oxygen and give out carbon dioxide.
Plants take in carbon dioxide and give out oxygen.
This ways the oxygen is circulated in the atmosphere.
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Ninety nine percent of atmosphere is composed of what?
The nitrogen and oxygen in Earth's atmosphere together account for a speck more than 99% of it..
What percent of O and N can you find in the atmosphere?
78% Nitrogen 21% Oxygen
In which sphere would one find more total oxygen by volume?
atmosphere
How much oxygen is in the sea?
Much less than the approximate 21% in the air. Perhaps half that. Fish need a large energy expenditure to strain oxygen from the water. Most of the oxygen produced by phytoplankton, for instance, is vented into the atmosphere.
What is the ratio of the gases in the atmosphere?
The ratio is approxNitrogen : Oxygen : Argon : Carbon Dioxide :: 39000 : 10500 : 465 : 19.
What percent of the atmosphere is oxygen'?
21% of the atmosphere is oxygen.
What is the oxygen content of the atmosphere?
The atmosphere is 79.9% oxygen.
What is an aerobic atmosphere?
the environment which has the availability of oxygen it is called aerobic atmosphere and if the availability of oxygen is not there in atmosphere then it is anaerobic type We live in a aerobic atmosphere which has the oxygen available
Why doesnt the moon have oxygen?
The moon has no oxygen because it has no atmosphere.
Is there oxygen in Mercury?
No, there is no oxygen in Mercury's atmosphere because Mercury does not have an atmosphere.
Is the atmosphere partly oxygen?
Yes, oxygen makes up 20.9% of the atmosphere.
What gives more oxygen to the atmosphere?
Plankton gives more oxygen to the atmosphere.
What makes molecular oxygen in our atmosphere?
Cyanobacteria make molecular oxygen in our atmosphere.
What types of organisms remove oxygen from the atmosphere?
Animals remove oxygen from the atmosphere.
Do any of the planet have oxygen in their atmosphere?
Yes. There is one planet with oxygen in its atmosphere: our home planet Earth.
Is the oxygen in the Earth's atmosphere diminishing?
No it isn't. We still have about 21% oxygen content in the atmosphere.
Why are plants efficient producers?
Photosynthesis is carried on by plants that produce oxygen.This process has replaced all oxygen that is in the atmosphere for more than 2 000 years.
