Question

Explain how soil pollution and soil erosion could be prevented.

Answer 1

Prevention of soil pollution:

(i) There should be a ban on polythene bags and plastics.

(ii) Waste products and chemicals should be treated before they are released into the soil.

(iii) The use of pesticides should be minimised.

Prevention of soil erosion:  

(i) By growing trees.

(ii) Avoid deforestation.

(iii) Maintaining porous structure of soil.

(iv) Control and reclamation of ravines and shifting of cultivation.

Answer 2

Prevention of soil pollution:
(1)..To prevent soil pollution, its causes must be controlled.
(2)..Plastics and polythene bags destroy the fertility of soil. Hence, they should be disposed properly and if possible, their use should be avoided.
(3)..Some waste products from industries and homes pollute soil. These pollutants should be treated chemically to make them harmless before they are disposed.Other pollutants of soil include pest
(4)..Other pollutants of soil include pesticides and insecticides. Therefore, excessive use of these substances should be avoided.
Prevention of soil erosion:

(1)..By planting trees.
(2)..Checking indiscriminate cutting of trees.