The answer is; B
Sometimes winds carry the sand of the beaches causing erosion. The fences act as breakers of this wind erosion. As wind tries to carry the sand, they encounter the fence and 'break'. Therefore, the sand is deposited along the fence forming a sand dune. These dunes also form protection from storm surges.
The answer is B because the humoral immune response is mediated by antibody
The answer is nutrients.
Nutrients nourish the body by providing it with energy and/or contributing to the body's metabolic processes. Nutrients come from food in the form of carbs, fats, and protein, all of which need to be digested by the body before it can use these nutrients.
Answer:
No, they only respond to a signal if they have a receptor that can receive the signal.
Explanation:
