Question

Identify, which of the following is not a factor responsible for land degradation.

(Choose the correct alternative)

• A. Deforestation
• B. Overgrazing
• C. Industrial practices
• D. Proper crop rotation

Hint:

Deforestation, overgrazing and industrial practices all damage soil. Crop rotation protects soil fertility, so it is the odd one out.

Answer 1

The Correct Option is D

Step 1: Understand the question:
Land degradation means the soil loses its fertility and quality.
We must find the option that does NOT cause this damage.

Step 2: Check (A) Deforestation:
Tree roots hold the soil together. When forests are cut, rain and wind wash the topsoil away.
So (A) is a cause of land degradation.

Step 3: Check (B) Overgrazing:
Too many animals on a pasture eat all the grass and trample the soil.
The bare soil erodes and turns to desert. So (B) is a cause.

Step 4: Check (C) Industrial practices:
Mining, dumping of waste and chemical effluents spoil the soil and make land unfit for use.
So (C) is a cause.

Step 5: Check (D) Proper crop rotation:
Growing different crops in turn keeps nutrients in the soil and breaks pest cycles.
It protects soil fertility, so it is not a cause of degradation. (D) is the answer.

Final Answer:
Proper crop rotation helps the soil, so it is not a factor of land degradation. The correct option is (D). \[ \boxed{(D)} \]