Question

what is a dam? why are dams called multipurpose projects?

Answer 1

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Dam -: A structure placed across a flowing body of water to stop the flow or part of the flow, generally forpurposes such as retaining ordiverting 
some of the water or retarding therelease of accumulated water toavoid abrupt flooding

Dam is known as multipurpose projects because it helps in transportation as well as controlling flow of water and generating hydroelectricity

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Answer 2

Answer: they are called that for the following:

— controlling water.

— the water from the dam is used for irrigation.

— generate electricity.

Since dams are useful in so many ways they are called multipurpose project.

Explanation: