Peristalsis is the physical movement or pushing of food along the digestive tract.
Answer:
a. human geography
Explanation:
he is studying how people move
Answer:
A) It is older than the rocks it intrudes.
Answer:
A river delta is a low-lying plain or land form that occurs at the mouth of a river near where it flows into an ocean or another larger body of water. Deltas' greatest importance to human activities, fish and wildlife lay in their characteristic highly fertile soil and dense, diverse vegetation.
Explanation:
