Question

What is air.?
what is air.?​

Answer 1

Q. $ \bf \red{What ~ is ~ Air?}$

$ \leadsto $ $ \sf \blue{Air}$ is the invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen.

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Answer 2

Air is the invisible mixture of gases that surrounds the Earth. Air contains important substances, such as oxygen and nitrogen, that most species need to survive. Human beings, of course, are one of those species. Sometimes, the word "atmosphere" is used instead of the word "air."