Question

The uppermost horizon, horizon O, in this profile is composed mostly of _________, while the lower horizon, horizon C, is composed mostly of _______.
A) silt; gravel.
B) gravel; rocks.
C) organic matter; rocks.
D) top soil; organic matter.

Answer 1

c is the correct answer

Answer 2

Answer;

C) organic matter; rocks.

The uppermost horizon, horizon O, in this profile is composed mostly of organic matter, while the lower horizon, horizon C, is composed mostly of rocks.

Explanation;

-Soil contains the following major horizons, that is A B and C. Some soils may have horizon O, which may be thin or thick or even lack in some soils. This O horizon is found at the surface of many soils and normally contains organic materials at various decomposition stages. these are materials such as plants, leaves and bugs.

-C horizon is the layer that is below the B horizon. It contains larger weathered fragments or broken up-bedrock.