Question

what is air????
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Answer 1

Answer:

Air is the general name for the mixture of gases that makes up the Earth's atmosphere. This gas is primarily nitrogen (78%), mixed with oxygen (21%), water vapor (variable), argon (0.9%), carbon dioxide (0.04%), and trace gases. Pure air has no discernible scent and no color.

Answer 2

Answer:

Air is the invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen.