Write any two methods by which you can prevent soil pollution
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ECTION-C (B MARKS QUESTIONS)
11. Suppose certain sample makes 120 min for 960 ml water to percolate into the
il Calculate the rate of percolation of water
Answers
Explanation:
SOIL POLLUTION
1. The persistent build-up of toxic compounds in the soil is defined as soil pollution.
PREVENTION OF SOIL POLLUTION
To prevent soil pollution, its causes must be controlled.
1. Reduce the use of plastics: Plastics and polythene bags destroy the fertility of the soil. Hence, these should be disposed off properly and if possible, their use should be avoided.
2. Industrial pollutants: Some waste products from industries and homes pollute the soil. These pollutants should be treated chemically to make them harmless before they are disposed off.
3. Insecticides: Other pollutants of soil include pesticides and insecticides.
4. Use manures instead of chemical fertilizers.
5. Industrial waste should be treated before release.
Therefore, the excessive use of these substances should be avoided.
SOIL EROSION
1. Removal of the upper fertile layer of the soil(topsoil) by strong wind and flowing water is known as soil erosion.
PREVENTION OF SOIL EROSION
Following steps can be taken to reduce soil erosion.
1. Mass awareness to reduce deforestation for industrial purposes.
2. Helping local people to regenerate the degrading forest.
3. Planting trees.
4. Avoid over-grazing of grasslands.
5. Use of step-farming in hill regions.
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