Biology, asked by vermaakshit1243, 1 year ago

Why do we rispire in oxygen only why not in CO2 or n2 ?

Answers

Answered by shiva20054

Answer:

Basically when air fills our alveoli, by the process of diffusion, only oxygen in the air is taken into the blood stream while the other gases along with the waste CO2 is exhaled. So you do breathe in nitrogen, but it is exhaled as it is by the body

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