In which of the soil layer does most biological activity occur?

In which of the soil layer does most biological activity occur?

  • A.
    B – horizon
  • B.
    C – horizon
  • C.
    D – horizon
  • D.
    A – horizon
Correct Answer: Option D
Explanation

A – horizon is the top layer of the soil horizon, it contains decomposed organic matter which is necessary for plant growth and also microorganisms

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