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Gravity keeps it here, just like water, trees, us, and even keeps the very Earth together!

When the Earth was formed particles of gas around our sun started to clump together and the more mass this clump had the more gravity it gained (this occurred over millions of years)

The same thing keeps the air here. Air is so thin and light that it leaves the ground and yet stays here due to gravity.

As you go further up into the atmosphere the air gets thiner. That is because a large amount of air can't stay that high, due to gravity. Eventually you reach a point where there is no air because it is all near to Earth.

Hope this is helpful.

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14y ago

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