Question

Most of the air we breathe is made of what molecule?

A. Carbon dioxide
B. Water vapor
C. Nitrogen
D. Oxygen

Answer 1

The answer will be C if you are talk about the percent of what the air made out of

Answer 2

C. Nitrogen

Step-by-step explanation:

The composition of air is as follows:

nitrogen 78%

Oxygen 21%

carbon dioxide 0.03 %

water vapour 0.2 to 0.4 %