How is food moved in tge gastrointestinal tract?

Food moves through your GI tract by a process called peristalsis. The large, hollow organs of your GI tract contain a layer of muscle that enables their walls to move. The movement pushes food and liquid through your GI tract and mixes the contents within each organ.

Explanation:

c. heat from the poles back down towards the equator.

c is the answer to this question. altitude affects the weather because air molecules evaporate.