Test: AP Environmental Science

1.

Which of the following is NOT an adverse affect of building dams to generate hydro-electric power?

Animals that rely on fish as sustainance may begin to decline because the dam has permanently altered fish habitat. 

The energy required to operate and maintain the dam is often equal to the energy produced by the dam. 

Dams often change the current and width of a watershed, altering the riparian ecosystem. 

Dams can contribute to flooding and resulting property damage. 

Many fish populations (including salmon and trout) are decimated because dams restrict access to essential habitat. 

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