The air you breathe into your lungs on a daily basis mostly consists of
A)oxygen.
B)carbon dioxide.
C)nitrogen.
D)hydrogen.

Question

Quizplus · Accepted Answer

The air you breathe into your lungs is primarily composed of nitrogen, which makes up about 78% of the Earth's atmosphere. Oxygen, the second most abundant gas in the atmosphere, constitutes about 21%, while carbon dioxide and other gases make up the remainder.

The Air You Breathe into Your Lungs on a Daily