Question

Soil fertility is reduced by

• A. intensive farming
• B. crop rotation
• C. nitrogen fixing bacteria
• D. decaying organic matter

Answer 1

The correct option is A

intensive farming

The correct option is A.

Explanation of the correct option:

1. In intensive farming, a large area of fertile land is used for farming continuously.
2. By constantly planting on the same farmland, the crops will reduce the minerals and fertility in that soil.
3. This way leads to damage to soil and reduces nutrient levels and fertility.

Explanation of the incorrect option:

Option B:

1. Crop rotation is the method in which all kinds of crops are used in that soil according to the level of minerals.
2. So in the crop rotation method, soil fertility is not lost.

Option C:

1. In this method, the lost nitrogen level in the soil is increased by using a unique bacteria.
2. Hence, soil fertility is not reduced by using the nitrogen fixation method.

Option D:

1. Decaying the organic matter in the soil used for farming makes the soil rich in vitamins and minerals.
2. Therefore this method also does not lead to the reduction of fertility in the soil.

Final Answer: Soil fertility is reduced by intensive farming.