What is dam ? Write two main advantages and two ill effects of constructing a big dam.<br />
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a barrier constructed to hold back water and raise its level, forming a reservoir used to generate electricity or as a water supply. ,
1. Once a dam is constructed, electricity can be produced at a constant rate.
2. If electricity is not needed, the sluice gates can be shut, stopping electricity generation. The water can be saved for use another time when electricity demand is high.
1. Once a dam is constructed, electricity can be produced at a constant rate.
2. If electricity is not needed, the sluice gates can be shut, stopping electricity generation. The water can be saved for use another time when electricity demand is high.
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