Question

Which of the following phenomena could expose the top layer of soil?

• A. Deforestation
• B. Aforestation
• C. Farming
• D. Building dam

Answer 1

The correct option is A Deforestation

If the top layer of soil is exposed, then it will gradually expose the lower layer of soil, which is hard and rocky in nature. This type of soil is less fertile as it contains less humus. Continued soil erosion will make the land barren or infertile.

Soil erosion is defined as the wearing away of topsoil. Topsoil is the top layer of soil and is the most fertile because it contains the most organic, nutrient-rich materials. Deforestation can expose the top layer of soil and the land will eventually erode.

Thus, the correct option is A.