Question

Which of the following has led to an increase in pollution, sedimentation, flooding, and loss of land fertility?

• A. Formation of soil by weathering
• B. Increasing the quality of soil by adding fertilisers
• C. Transportation of soil from one place to another by wind
• D. Denudation of soil cover and its washing down

Answer 1

The correct option is D Denudation of soil cover and its washing down

Soil erosion can be defined as the denudation of the soil cover and subsequent washing down of soil. Some causes of soil erosion are human activities like deforestation, overgrazing, construction and mining, or natural forces like wind, glaciers and water. Soil erosion results in loss of land fertility, increase in pollution, clogs waterways, flooding, and sedimentation in rivers.