Q. Which of the following is/are the main agent(s) of soil erosion?

[A] Wind and water

[B] Rocks

[C] Sand

[D] None of these

Answer: A
Notes:

Explanation: Soil Erosion:

  • Soil erosion has been defined as the gradual removal of the topsoil by running water, wind, glacier, sea waves, anthropogenic agents and animals.
  • Soil erosion is a universal phenomenon.
  • According to one estimate about 75, 000 million tonnes of soil is removed by these agents annually. – In India, about 6000 million tonnes of soil are removed annually. Topsoil is currently lost 16 to 300 times faster than it can be replaced (which takes 200 to 1000 years).

Agents of soil Erosion:

  • Running water:Uniform removal of soil Rill erosionGully erosion (e.g. northern Punjab, Haryana, Rajasthan, M.P. U.P) Wind Erosion: Mainly in the arid and semi-arid regions.

Sources: NCERT

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