What are some effects of building a dam?

A. The reservoir (lake) traps sediment that over time fills up part of the reservoir.
B. A dam, whether constructed by nature or by humans, represents a permanent change in base level.
C. A stream has more sediment below the dam and so can erode more efficiently.
D. The stream erodes into the land instead of depositing sediment, where it enters the reservoir.


Answer: A

Environmental & Atmospheric Sciences

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