Question

Why the amount of nitrogen does not vary between exhaled and inhaled air?

Answer 1

You need oxygen to live because it functions in cellular respiration, which supplies you with energy. Oxygen is used up and carbon dioxide is produced. When you inhale, you are taking in oxygen to supply your body with it. When you exhale, you are releasing the carbon dioxide because your body doesn't need it. You don't release the same amount of oxygen that you breathed in because your body needs it.

Answer 2

Nitrogen We inhale 78% Nitrogen and exhale 78% nitrogen. ... Oxygen The percentage of Oxygen in exhaled air is less than in inhaled air because the body uses Oxygen for respiration Carbon Dioxide The percentage of carbon dioxide increases when exhaling as it is a product of respiration.