Question

two characteristics of air
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Answer 1

Answer:

Air is a mixture of gases, water vapour and other substances.

1.Air is made up of gases.

2.Air exerts pressure and has weight.

Explanation:

Answer 2

Answer:

air is a major part of a atmosphere .

there are a mixture of gases like nitrogen, oxygen, carbondioxide ,carbon monoxide,etc.

in air the composition of nitrogen is 78 %

oxgyen is 21%

and other gases 1 %