In which layer of the soil profile do most biological activities occur?

Assessment: WAEC SSCE - Agricultural Science - 2011 (Objective) Subject: Agricultural Science

Question 1 Report

In which layer of the soil profile do most biological activities occur?
Answer Details
The layer of the soil profile where most biological activities occur is the A-horizon. This is the top layer of the soil, also known as the topsoil, which is rich in organic matter and nutrients. It is in this layer that plant roots grow, microorganisms thrive and decompose organic materials, such as dead leaves and animal remains. The A-horizon is essential for supporting plant growth and providing nutrients for agriculture, forestry and other land uses.
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