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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.
How is oxygen replaced?
Oxygen is replaced through the process of photosynthesis, where plants and other producers take in carbon dioxide and release oxygen as a byproduct. Additionally, oxygen is replenished by the dissolving of oxygen gas from the atmosphere into water bodies.
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.
How is oxygen in air replaced?
Oxygen in the air is constantly replenished through the process of photosynthesis, where plants take in carbon dioxide and release oxygen. This cycle helps maintain the balance of oxygen in the atmosphere.
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
Is there oxygen in Mercury?
No, there is no oxygen in Mercury's atmosphere because Mercury does not have an 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.
Is the atmosphere partly oxygen?
Yes, oxygen makes up 20.9% of the atmosphere.
What makes molecular oxygen in our atmosphere?
Cyanobacteria make molecular oxygen in our atmosphere.
What gives more oxygen to the atmosphere?
Plankton gives more oxygen to the atmosphere.
What types of organisms remove oxygen from the atmosphere?
Animals remove oxygen from the atmosphere.
What is the proportion of oxygen in the atmosphere today?
About 21% of the Earth's atmosphere is oxygen.
