Multiple choice

Which of the following statements is/are correct?

a. The dust generated by mineral processing retards the process of infiltration of water into the soil after it settles down on the land. b. Land degradation in sand dunes can be checked by growing thorny bushes. c. Over-irrigation robs the salinity and alkalinity of soil.

  1. a only

  2. b only

  3. c only

  4. a and b

  5. a, b and c
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct answer.

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