Question

Which of the following is a problem caused by dams?

O A. They can be used to generate electricity.
B. They provide water for the irrigation of crops.
.
O C. They impede fish migration and spawning.
O D. They collect and store water for human use.

Answer 1

They impede on fish migration and spawning (it’s the only negative answer and the question is looking for a problem, not a benefit)

Answer 2

C. because the dam blocks fish from traveling ahead of the dam