Which of the following soil horizons contains the most organic matter?
A)substratum
B)subsoil
C)topsoil
D)bottom soil
E)humus

Question

Quizplus · Accepted Answer

Topsoil is the uppermost layer of soil and it is where most of the organic matter accumulates. This layer is rich in humus, which is the decomposed remains of plants and animals. Therefore, topsoil is the horizon that contains the most organic matter.

Which of the Following Soil Horizons Contains the Most Organic