What gases make up air?

The air is primarily composed of five gases: nitrogen, oxygen, argon, carbon dioxide and water vapor. In addition to these five gases, there are also trace amounts of several gases, but these make up much less than one percent of air. read more

The gases that comprise the atmosphere are commonly referred to as air, which is what all living things on Earth breathe. TL;DR (Too Long; Didn't Read) The majority of the air we breathe is made up of nitrogen and oxygen, though you'll also find argon, carbon dioxide and other gases in trace amounts. read more

The air in Earth’s atmosphere is made up of mostly nitrogen (nearly 80%), then some oxygen (20%), and then the rest is made up of small amounts of other gases like carbon dioxide and argon. read more