explain how soil pollution and soil erosion could be prevented class 7
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Answer:
Prevention of soil pollution can be done by (i) use of manures instead of synthetic fertilisers. (ii) use of natural pesticides. (iii) avoid dumping of polythene and plastics in soil. ... Prevention of soil erosion can be done by (i) afforestation that is large scale planting in place of cut down forests.
Explanation:
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Answer:
The ways to prevent soil pollution are:
(i) Recycling of non-biodegradable wastes.
(ii) Limiting the use of pesticides and insecticides.
(iii) Making dumping grounds of non-biodegradable wastes far away from fertile land.
The removal of land surface by water, wind or ice is known as erosion. The ways to prevent soil erosion are:
(i) Afforestation or planting of trees.
(ii) Reduce cutting down of trees or deforestation.
(iii) Using step farming in hilly regions