|search Mr. R.'s world of math and science free and accessible educational resources for all|
What is air?
Air makes up the Earth’s atmosphere, which is a layer of gasses that surrounds the planet.
Air is something we don’t see, but we can’t live without. All living organisms need air to survive. It is one of the basic needs for life.
The air around Earth is made up of many different gasses. The types of gas that are most abundant in Earth’s atmosphere are nitrogen, oxygen, argon, and carbon dioxide.