Question

Write short notes on the following:
thermal pollution, soil pollution

Answer 1

Thermal pollution:
Thermal pollution is a type of water pollution in which heated waste is released into large water bodies, causing a change in the overall temperature of the water. The main cause of thermal pollution is the use of water as a coolant in power plants and industries and its release in lakes and large water bodies. The sudden change in the temperature of water may kill fish and other organisms, which is the most important adverse effect of thermal pollution.

Soil pollution:
Soil pollution refers to the degradation of soil fertility by the removal of useful components and the addition of harmful substances. Soil pollution can be caused by solid wastes as well as chemicals.
Fly ash, which is a grey powdery residue of unburnt material, is produced by most industrial furnaces and thermal power stations.
Fly ash is deposited in the soil and causes pollution. It makes the soil infertile and kills the micro-organisms living in it.