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Question

How is humus formed? Mention any three characteristics of humus.

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Solution

Humus is a dark, organic material rich in nutrients that forms in soil when plant and animal matter decay. It is formed by the microbial action on dead decaying bodies and leaves.
Features of humus are :
  1. Dark coloured
  2. Highly resistant to microbial action
  3. Colloidal in nature

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