Question

1. What is the composition of air?​

Answer 1

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

78% Nitrogen 21% Oxygen 0.03% carbon dioxide

Explanation:

hope it helps you