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What is the primary negative effect of dam-building? A. Dams prevent flooding of only small areas. B. Dams disrupt the delicate ecology of an area. C. Dams remove sediment from river beds. D. Dams keep fish from breeding.

Alexa Spicer

in Geography

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Alexa Spicer on July 25, 2018

The correct answer is B. the Dams disrupt the delicate ecology of the area.The dams are very useful for humans, but good are very harmful to the ecological systems. When a dam is built, it is immediately the restriction of organisms to move freely, so they have restricted movement only to a certain are. Also contribute to the temperature of the water, and as water is becoming more and more stagnant, it is ever more warm, therefore making the organisms that have been taken to the different temperatures of the water. The breeding may also be restricted because some species only reproduce in certain places, and dams, often, do not allow them to move from there.


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