Answer:
We can prevent erosion by not disturbing the coral reefs and help them build more near the coastline. The structure of the coral reefs helps to prevent the loss of life and it also prevents erosion. The coral reefs act as a barrier against the water flows such as waves or floods. In this way they prevent erosion by serving as natural barriers. Hence, erosion can be prevented if more coral reefs are allowed to grow near the coastline.
Answer:
4, 2, 3, 1 from top to bottom.
I think the answer is B if I’m not mistaken