Question

Air is mostly made up of what two gases. a)oxygen and nitrogen b)oxygen and hydrogen c)hydrogen and helium​

Answer 1

Answer:

Air is mostly gas

So what is air, exactly? It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen

Answer 2

Answer:

a oxygen and nitrogen

Explanation:

because nitrogen and oxygen are mostly found in air