Question

why carbon dioxide is more and oxygen is less in exhaled air ​

Answer 1

Answer:

When the air reaches the lungs, some of this oxygen is transferred from the lungs to the blood, and is then transported throughout the body to be used for energy. ... The result is that the exhaled air contains less oxygen and more carbon dioxide than the inhaled air.

Answer 2

Reason behind this:-

When the air reaches the lungs, some of this oxygen is transferred from the lungs to the blood, and is then transported throughout the body to be used for energy.