Question

What are the sources of soil pollution?

  • Natural resources CBSE Class 9
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Answer

Soil pollution mainly results from the following sources:

(๐ข) Industrial wastes: wastes discharged from pulp and paper mills, chemical industries, oil refineries, coal and mining industries, etc., are responsible for soil pollution.

(๐ข๐ข) Urban wastes: solid wastes and refuse in urban areas contribute to soil pollution.

(๐ข๐ข๐ข) Radioactive pollutants: radioactive substances resulting from explosions of nuclear devices, atmospheric fall out from nuclear dust penetrate the soil and pollute it.

(๐ข๐ฏ) Fertilisers: excessive application of fertilisers to the soil to increase food and vegetable production causes soil pollution.

(๐ฏ) Pesticides: different kinds of pesticides used to control pests cause soil pollution.

(๐ฏ๐ข) Farm wastes: wastes from cows, cattle, pigs and poultries are one of the major sources of soil pollution.

(vii) Chemical and metallic pollutants: synthetic chemicals are a source of trace metals which are added to the soil either deliberately or as an impurity.

(๐ฏ๐ข๐ข๐ข) Biological agents: soil gets large quantities of human, animal, bird excreta which constitute the major source of soil pollution by biological agents.

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