The layer known as the topsoil, mixing organic matter with weathered m…

Question

The layer known as the topsoil, mixing organic matter with weathered minerals, is the:

Accepted Answer

C. A horizon

1. It is where most root activity happens.
2. It marks the start of true mineral soil.
3. That layer is the A horizon.
_Source: OpenStax Biology 2e, Chapter 31, Soil and Plant Nutrition._

Answer

B horizon

Answer

C horizon

Answer

O horizon

The layer known as the topsoil, mixing organic matter with weathered minerals, is the:

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