How is air made?

Answer:
Air is made by trees and plants taking in carbon dioxide (a poisonous gas) and letting it back out as air also known as oxygen. If every tree in the world was chopped down they wouldn't be able to take in carbon dioxide so we wouldn't be able to breathe.
First answer by ID1199754725. Last edit by Pink-Ella. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 1 [recommend question].