3. Give reasons.
(1) Environmental aspects must be carefully looked into before building
huge dams.
(ii) Most industries are concentrated around coal mines.
(iii) Petroleum is referred to as "black gold".
(iv) Quarrying can become a major environmental concern.
Answers
Answer:
1.
The original purposes of dams were to improve human quality of life by providing drinking water and to support economic growth by diverting water for power, navigation, flood control, and irrigation.
2.It is concentrated near steel industry because it is used for making steel and near other industries because it helps in generating electeicity. ... So, most industries are concentrated around coal mines.
3.Petroleum is also known as Black Gold -
because when crude oil is extracted from the land it is black in color. People call it gold because of its oils and value . It is very difficult to find.
4.Quarrying can become a major environmental concern because of the following reasons: → It may destroy the humus of soil which is much required for the growth of plants and crops. ... → In the process of quarrying lot of dust is generated which causes air pollution and also occupational hazards.
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