Question

Makeup of the atmosphere

Answer 1

Answer:

The air near the earth’s surface consists of 77 percent nitrogen and about 21 percent oxygen.

Explanation:

I hope this helps

there is also a bit of Carbon Dioxide

Answer 2

Answer: Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%. Gases like carbon dioxide, nitrous oxides, methane, and ozone are trace gases that account for about a tenth of one percent of the atmosphere.