Question

which is the major thread of soil degradation​

Answer 1

Soil erosion is the major cause of soil degradation. In the soil erosion, uppermost fertile layer of soil which contains essential nutrients is lost. Thus soil becomes deficient in essential minerals and this results in productivity loss. Deforestation or destruction of forests accompanied by reduced frequency of rainfall leads to soil erosion and causes damage to agriculture property. Deforestation causes fast degradation when the soil is steep sloppy or easily erodible. Destruction of natural vegetation cover is a major factor responsible for erosion of soils by water and wind.

Answer 2

Answer:

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