Question

3. Give reasons
(i) Environmental aspects must be carefully looked into before building
huge dams.
Most industries are concentrated around coal mines.
(i) Petroleum is referred to as "black gold".
(iv) Quarrying can become a major environmental concern.​

Answer 1

Explanation:

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Answer 2

Answer:

Hence, environmental aspects must be carefully looked into before building huge dams. Most industries are concentrated around coal mines. Answer: Coal is an important source of energy and hence most of the industries are located around coal mines. Petroleum is referred to as “black gold”.