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Approximately 20%.
The nitrogen we bresth in remains inert, and is just exhaled, with the carbon dioxide.
lenpollock
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What percent of the air we breath is oxygen?
About 21% of air is oxygen.
What are the components of the air we breathe?
The components found in the air are 21 percent oxygen and 78 percent nitrogen. In the air people breath there are also trace amounts of carbon dioxide present.
How does the nose take the oxygen from the air?
when you breath in throught the nose all of that oxygen from the air comes from the oxygen and carbon dioxide that other people breath in.
How is the air you breathe in different from the air we breathe out?
We get rid of waste when we breath out and when we breath in we take oxygen in to our lungs and breath.
What percentage of the air that you breath is nitrogen?
about 78 or 79 percent.
What percent of the air we breath is oxygen?
About 21% of air is oxygen.
Do you breath air?
Yes. All humans breath a type of air called oxygen. Without oxygen we would die.
What makes up 21 percent of the air?
oxygen! There is 21 percent oxygen in inspired ( the stuff you breath in) air and 13 percent in expired(the stuff you breath out)
Which gas is 20 percent the air that you breath?
Oxygen
What does air produce?
Air produces oxygen for humans to breath and also plants
What forms 20 percent of air?
Oxygen makes uo 20% of the air we breath.
Do birds breath oxygen?
Birds breath air, just as we humans do, their respiratory system extracts the oxygen which they need to live, again just as we do.
Once Oxygen is breathed is it inert or If not with out trees is it possible that humans could one day breath up all the oxygen?
=whene u breath out air that comes out is filled with oxygen tree=
What are the components of the air we breathe?
The components found in the air are 21 percent oxygen and 78 percent nitrogen. In the air people breath there are also trace amounts of carbon dioxide present.
What keep humans alive?
air water food
Why can't man breath on Mars?
The Martian atmosphere is mainly Carbon Dioxide. Humans need Oxygen to respire but there is no Oxygen in the Martian air. Humans could still breathe in Martian air but they would die from lack the of oxygen.
What percent of the air in the atmosphere is in this layer humans live in?
22% oxygen at sea level
