Which statement best describes hydroelectric power? 

A)  It has relatively low construction costs. 
B)  It can have high environmental impacts. 
C)  It cannot be done on a small scale. 
D)  It delivers low net energy.

Hydroelectric Power

The generation of electricity by converting the kinetic energy of moving water, typically through the use of dams or diversionary structures.

Environmental Impacts

Environmental impacts are the changes to the environment caused by human activities or natural disasters, which can be positive or negative and affect air, water, soil, and ecosystems.

Small Scale

Referring to activities or operations of a reduced, limited, or miniature size, often implying a more local, personalized, or less intensive approach.