write two main advantages and two ill effects of constructing a big dam
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Dams: Dams are constructed across the rivers to regulate the flow of water. The large reservoir of a dam stores a huge amount of water brought in by the flowing river. The stored water is then allowed to flow downstream at the desired rate.
Advantages :
Water from a dam is supplied to the people in towns and cities through pipelines after suitable treatment. In this way, construction of dams ensures continuous water supply in the region. Water from a dam is used for irrigation in fields through a network of cannals. Dams ensure round the year water supply to the crop fields and help raise agricultural production.
Effects :
Social Problems : Due to the construction of high-rise dams, a large number of human settlements (or villages) are submerged in the water of large reservoir formed by the dam and many people are rendered homeless. Environmental Problems : The construction of high-rise dams in the rivers contributes to deforestation and loss of biodiversity. This is because a vast variety of flora and fauna (plants and animals) get submerged in the water of large reservoir formed by the dam and disturb the ecological balance.
Advantages :
Water from a dam is supplied to the people in towns and cities through pipelines after suitable treatment. In this way, construction of dams ensures continuous water supply in the region. Water from a dam is used for irrigation in fields through a network of cannals. Dams ensure round the year water supply to the crop fields and help raise agricultural production.
Effects :
Social Problems : Due to the construction of high-rise dams, a large number of human settlements (or villages) are submerged in the water of large reservoir formed by the dam and many people are rendered homeless. Environmental Problems : The construction of high-rise dams in the rivers contributes to deforestation and loss of biodiversity. This is because a vast variety of flora and fauna (plants and animals) get submerged in the water of large reservoir formed by the dam and disturb the ecological balance.
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Your answer
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Any two main disadvantages or I'll effects of constructing a big dam are as follows : -
(1) Construction of a big dam leads to displacement of people because a large area will be occupied by the dam and thus the inhabitants will have to leave the place .
(2) As a large area is needed for construction of big dams the surrounding forest cover also needs to be cleared ,thus ,construction of big dams also lead to deforestation.
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Your answer
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Any two main disadvantages or I'll effects of constructing a big dam are as follows : -
(1) Construction of a big dam leads to displacement of people because a large area will be occupied by the dam and thus the inhabitants will have to leave the place .
(2) As a large area is needed for construction of big dams the surrounding forest cover also needs to be cleared ,thus ,construction of big dams also lead to deforestation.
HOPE IT HELPS
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