Question

Which of the following causes erosion of the topsoil in hilly regions?

• A. Movement of animals
• B. Heavy rains
• C. Deforestation
• D. Both B and C

Answer 1

Answer: (D)

Both B and C

The roots of plants and trees hold the soil together. Soil surface that is bare or lacks vegetation is subjected to removal very quickly. The detachment of soil particles of the top layer of soil by raindrops and their removal down the slope with the flow of water is often referred to as topsoil erosion. This is mainly observed in hilly areas. Heavy rains tend to wash the top layer of soil easily down the hilly terrain.

Thus, both deforestation and heavy rains cause the erosion of topsoil.

So, the correct answer is option D.