Question

1. What is the composition of air?​

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.

Explanation:

Answer 2

Air is composed of gases ...

78% of air is composed of nitrogen

21% of air is composed of oxygen

1% of air is composed of other gases like carbon dioxide, methane , helium