Multiple choice

Which of the following actions does not cause soil erosion?

  1. Excessive ploughing

  2. Mulching

  3. Overgrazing

  4. Contour ploughing
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mulching involves covering soil with organic material or plastic to conserve moisture, suppress weeds, and protect soil structure - it actually PREVENTS soil erosion rather than causing it. Excessive ploughing loosens topsoil making it vulnerable, overgrazing removes vegetation cover, and contour ploughing is a protective measure. Therefore, mulching is the action that does not cause soil erosion.

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