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Question

A0 layer is rich in

  1. Litter
  2. Humus
  3. Leachates
  4. Minerals

A
Minerals
B
Litter
C
Leachates
D
Humus
Solution
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Humus is partially decayed organic matter. It makes the soil porous, thereby, increasing its air and water holding capacity. It is rich in nutrients that promote plant growth. Being black, it absorbs heat to warm up the soil. Humus forms the topmost soil layer which is A0. Thus the correct answer is option D.

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