Question

we know that air is a mixture of various gases.then
Q- is it true to say that we always inhale or breath in air which is mixture of several gases?if no,how do we always inhaled o2 (oxygen)?
please justified this question. ​

Answer 1

Answer:

Yes, we do not only breathe oxygen but also other gases like carbon dioxide, small traces of hydrogen, nitrogen e.t.c. but only few gases among them are useful for human and plant body.