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Question

________is the hardest part of soil profile.


  1. Top soil

  2. Humus

  3. Subsoil

  4. Bedrock


Solution

The correct option is D

Bedrock


Bedrock is the hardest part of the soil. It is the deepest layer of the soil profile and it contains hard rocks. Humus is the dead and decaying matter and is the topmost part of the soil. Subsoil lies below the topsoil.

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