What happens when warm air rises? global temperature decreases. the movement creates a difference in air pressure. cool air rises with it. it moves towards the poles.

i took a test for bio that had this question and these were the correct answers, not sure if this is any now lol

the nervous system and the muscular system work together.  

sweat reaches the surface of the skin and evaporates into the air.

muscles underneath the skin relax, causing hair on the skin to lay flat.

the correct answer is: " ventricles " .

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