Dams are constructed on the river for multipurpose use. Give its advantages and disadvantages.

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Solution

Advantages Disadvanatges

Dams are helpful for the production of electric power or electricity at a continuous rate. The construction of dams is very costly, and requires high capital for the establishment.

With the help of dams, water can be stored and useful during the scarcity of water. By construction ofdams the local people living in nearby areas face a high risk of flooding.

When the electricity is generated by dams, it will not cause the greenhouse effect, there will be no pollution. The setup of the large dam can cause geographical harm and severe depression of the earth’s surface.

Stored water is useful for irrigation purposes as well as for supply to reservoirs and lakes. The large dams cause harm to surrounding plants and animals.

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Give reasons

(1) Dams are constructed on the river.

(2) It is easy to swim in a swimming pool than in a river.

List 3 advantages and disadvantages of constructing a dam on a river.

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Advantages	Disadvanatges
Dams are helpful for the production of electric power or electricity at a continuous rate.	The construction of dams is very costly, and requires high capital for the establishment.
With the help of dams, water can be stored and useful during the scarcity of water.	By construction ofdams the local people living in nearby areas face a high risk of flooding.
When the electricity is generated by dams, it will not cause the greenhouse effect, there will be no pollution.	The setup of the large dam can cause geographical harm and severe depression of the earth’s surface.
Stored water is useful for irrigation purposes as well as for supply to reservoirs and lakes.	The large dams cause harm to surrounding plants and animals.