Which is not a primary use of dams? a. recreation b. electricity generation c. flood control d. habitat restoration e. agricultural uses

ANSWER:

The correct option is D: Habitat restoration.

EXPLANATION:

Habitat restoration is the process that involves repairing sites that whose biological diversity and ecosystem have been destroyed. Habitat restoration is not a primary use of dams because dams are mainly used for generating electricity and for flood control. Dams are usually built with a purpose of storing excess water for generating electricity, using water for irrigation and agricultural purposes and for controlling floods. Dams also are sites of recreation allowing skiing, boating etc.

Answer (d) may increase or decrease porosity through dissolution or deposition;