Question

Changing a river into a lake is basically what a large dam does. One reason we do this to create reservoirs of fresh water. What is another positive reason to build a dam? A) Dams can help control flooding. B) Dams are needed by certain types of fish. C) Dams drastically change the local ecosystem. D) Dams can help reduce the intense heat of summer.

Answer 1

I think it's A. They help control flooding which is basically one of the reasons dams exist.

Answer 2

Pretty sure it's A. They help control flooding, and also provide recreation and hydropower. If this is incorrect, I'm sorry, but I hope it helps