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Which of the following methods helps preserve topsoil?

A. Integrated pest management
B. Drip irrigation
C. Crop rotation
D. Cover crops

Answer :

Final answer:

Crop rotation is the recommended way to maintain topsoil health.

Explanation:

The correct answer is C. Crop rotation. Crop rotation is a farming practice where different crops are grown in a specific sequence over a period of time. This helps to prevent nutrient depletion and reduce the buildup of pests or diseases in the soil. By rotating crops, the topsoil can maintain its fertility and health.

Learn more about Crop rotation

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