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Biology 21 Online
OpenStudy (anonymous):

when air expands?

OpenStudy (bioepic):

Air expands as temperature increases.

OpenStudy (bioepic):

(Or pressure decreases)

OpenStudy (anonymous):

well, gases tend to fill whole space. So it expands until it's everywhere (actually, you also have to include gravity, that's why vacuum exists)

OpenStudy (anonymous):

and you should post this in the physics section next time :)

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