1- 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?
a) It pollutes the air.
b)It reduces the level of groundwater.
c) It causes floods in vast areas of land.
d) It contaminates surface water by dumping wastes.

Question

1- 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? 
  a) It pollutes the air. 
 b)It reduces the level of groundwater. 
c) It causes floods in vast areas of land. 
d) It contaminates surface water by dumping wastes.

e.mccormick · Answer

For Geology/Earth Science, the closest is Geography: http://openstudy.com/study#/groups/Geography OK, so a "hydroelectric power plant" is usually a dam. So, when you dam up the water, what happens to the river above the dam?