Answer:
Its used as energy for the cell
Answer: the answer is D.
Explanation:I got it right on edge
When you swallow food, it doesn't just drop down into your stomach. Muscles contract in a wave-like motion to move the food along through the esophagus. This muscle movement is called, peristalsis, or peristaltic waves. These peristaltic waves contract behind the food bolus pushing it along the digestive tract.
An animal is endothermic if it is able to maintain its temperature through bodily processes.
Hollow, that's why birds can fly. There is nothing in the bone to weigh them down.
