19.Air contains about 21% oxygen. When we breathe in air,some of the oxygen is used and carbon
dioxide is produced.
What happens to the NITROGEN in the air we breathe in?
A. It gets converted to proteins.
B.It is also converted into CO 2 .
C. It comes out of the body unchanged.
D.Only the O 2 in the air is breathed in and CO 2 is breathed out.
Answers
Answered by
1
Answer:
The amount of inhaled air contains 21% of oxygen and 0.04% of carbon dioxide, while the air we breathe out contains 16.4% of oxygen and 4.4% of carbon dioxide. This is because our cells use oxygen from the inhaled air to release energy and give out carbon dioxide as a byproduct.
Answered by
4
Answer:
Its c.
It comes out unchanged
Similar questions