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Biology 18 Online
OpenStudy (anonymous):

1. Through the process of convection in the atmosphere, warmer air masses sink and cooler air masses rise. cooler air masses sink and warmer air masses rise. cooler air masses move toward the east and warmer air masses move toward the west. warmer air masses move toward the east and cooler air masses move toward the west.

OpenStudy (beccaboo333):

Welcome to OpenStudy, what do you think?

OpenStudy (anonymous):

Welcome to OpenStudy @16johnje !

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