Question

Most of Earth's dry air is made up of

A. carbon dioxide and oxygen.
B. nitrogen and argon.
C. nitrogen and oxygen.
D. oxygen and argon.

Answer 1

It is B.

Step-by-step explanation:

Hope this helps you

Answer 2

the answer is, C. nitrogen and oxygen. 78℅ of nitrogen and about 21℅ of oxygen domain most of the dry air.