About 21% of air is oxygen.
21 Percent
21
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.
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.
We get rid of waste when we breath out and when we breath in we take oxygen in to our lungs and breath.
Approximately 20%. The nitrogen we bresth in remains inert, and is just exhaled, with the carbon dioxide.
about 78 or 79 percent.
oxygen! There is 21 percent oxygen in inspired ( the stuff you breath in) air and 13 percent in expired(the stuff you breath out)
Oxygen
Oxygen makes uo 20% of the air we breath.
hi, as we breath in we breath in about 20% oxygen, we breath out 16%.. we only use about 4% of the oxygen we breath in..
Yes. All humans breath a type of air called oxygen. Without oxygen we would die.
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.
21.5%
We get Oxygen from atmosphere.It is in air we breath.
oxygen
Approximately 21% of the air we breath is oxygen.
we breath in oxygen and plants breath co2
If we didn't Breath Air how else would we get our Oxygen!??