Multiple choice general knowledge science & technology

Farmers can keep their soil fertile by

  1. Repeatedly growing the same crop

  2. Regular Tilling

  3. Irrigation

  4. Crop Rotation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Crop rotation prevents nutrient depletion by alternating different crops with varying nutrient needs, including legumes that fix nitrogen back into soil. Monoculture depletes specific nutrients, while excessive tilling disrupts beneficial soil structure and irrigation alone doesn't replenish nutrients.

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