Question

Which of the following is responsible for land degradation?

• A. Soil alkalinity
• B. Soil erosion
• C. Waterlogging
• D. All of these

Hint:

Land degradation can be chemical (salinity/alkalinity), physical (erosion), or hydrological (waterlogging). All these factors reduce the land's ability to support life and agriculture.

Answer 1

The Correct Option is D

Step 1: Define land degradation. Land degradation is a process in which the value of the biophysical environment is affected by a combination of human-induced processes acting upon the land. It means a decline in the quality and productivity of the land.

Step 2: Analyze the options as causes of degradation.

Soil alkalinity: High levels of alkaline salts in the soil make it infertile and unsuitable for agriculture.
Soil erosion: The removal of the top, fertile layer of soil by wind or water reduces land productivity.
Waterlogging: Excessive accumulation of water in the soil's root zone suffocates plants and leads to salinization, degrading the land.

Step 3: Conclude based on the analysis. All three are major causes of land degradation.