Question

Can someone help me

what is wrong with the statement“we breath in only oxygen and breath out only carbon dioxide”​

Answer 1

People do not only breathe in oxygen.

Step-by-step explanation:

In fact, when breathing in normal air, you only take in about 21% oxygen, the rest of the gasses being mainly nitrogen (about 79%). As for breathing out, it is mainly carbon dioxide, but there are a couple more gasses in there.

Answer 2

We breathe in air which has a higher concentration of oxygen than carbon dioxide and we breathe out air with a higher concentration of carbon dioxide. Both the gases are present in the inhaled and the exhaled air.