Hydroelectric power plants can generate huge amounts of electricity. Which of these statements best describes the impact of a hydroelectric power plant on the environment?
It pollutes the air.
It reduces the level of groundwater.
It causes floods in vast areas of land.
It contaminates surface water by dumping wastes.

Question

Hydroelectric power plants can generate huge amounts of electricity. Which of these statements best describes the impact of a hydroelectric power plant on the environment? 
   It pollutes the air. 
 It reduces the level of groundwater. 
 It causes floods in vast areas of land. 
 It contaminates surface water by dumping wastes.

e.mccormick · Answer

Hi again!  Now, like I said, a "hydroelectric power plant" is usually a dam. So, when you dam up the water, what happens to the river above the dam?