According to this diagram, which layer has humus (the organic component of soil, formed by leaves and other plant materials)?
*
1 point
Captionless Image
A Horizon
B Horizon
C Horizon
Based on the information given, the correct answer would be A Horizon.
Based on the given information, the layer that has humus (the organic component of soil formed by leaves and other plant materials) is the A Horizon.
To determine which layer has humus according to the diagram, you need to understand the different soil horizons. Soil horizons are distinct layers of soil that form as a result of weathering processes.
In this case, the diagram is referring to the three main soil horizons: A Horizon, B Horizon, and C Horizon.
The A Horizon, also known as the topsoil, is the surface layer of soil where most organic matter accumulates. This layer contains high amounts of humus and is typically darker in color due to the presence of decomposed plant and animal material.
The B Horizon, also known as the subsoil, lies beneath the A Horizon. It usually has less organic matter, though some limited amounts may be present.
The C Horizon represents the unweathered parent material and is located beneath the B Horizon. It contains little to no organic matter.
Based on this information, the correct answer to your question is the A Horizon. It is the layer that usually contains humus, which is the organic component of soil formed by leaves and other plant materials.