Question

Removal of top fertile soil by wind or water is called

• A. Siltation
• B. Soil erosion
• C. Weathering of soil
• D. Leaching

Answer 1

Answer: (B)

The correct option is B Soil erosion
Soil erosion is removal of top soil by agency of water (water erosion) and wind (wind erosion). Soil erosion is of two types- natural and anthropogenic. Natural or geological erosion is extremely slow removal of top soil due to rain water or wind. Anthropogenic soil erosion is caused by removal of plant cover through over grazing, litter collection, tree felling, leaving the soil unprotected during agricultural operations.

Siltation is pollution of water by silt or by clay.

The process of soil formation is known as weathering of soil.

Leaching is the process of loss of soluble contents of soil from the top layer.

Thus, the correct answer is option B.