Question

polept on low flame.
3. Give reasons.
(i) 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.​

Answer 1

Answer:

1)Construction of a huge dam creates large scale destruction of natural vegetation and wildlife in those areas which get submerged. ... Hence, environmental aspects must be carefully looked into before building huge dams.

2) Most industries are concentrated around coal mines because coal is an important source of energy. It is used as raw material in various industries. So to reduce the transportation cost, most of the industries are located near coal mines.