Question

Which of the following has a greater concentration in exhaled air than in inhaled air?

a) O₂
b) CO₂
c) N₂
d) H₂O vapor
e) Answers b and c are correct.
f) Answers b and d are correct.

Answer 1

The correct answer is option f) Answers b and d are correct. In exhaled air, the concentrations of both CO₂ and N₂ are higher compared to inhaled air.

Step-by-step explanation:

The correct answer is option f) Answers b and d are correct.

In exhaled air, the concentrations of both CO₂ and N₂ are higher compared to inhaled air.

For example, when we breathe in air, we take in oxygen (O₂) and release carbon dioxide (CO₂) with each breath. This is because our cells use up oxygen during cellular respiration, producing carbon dioxide as a waste product, which is then carried back to the lungs and exhaled.