Question

soil profile
a soil profile is a section
of soil that ranges from the surface to the
.

• each layer of a soil profile is

referred to as a soil
.

• horizon o is the top layer,

where is
present.

• horizon a is topsoil.
• horizon b is subsoil.
• horizon c contains weathered rock.

soil profile
o
organic
a
topsoil
b
subsoil
c
weathered
rock

Explanation:

A soil profile is a vertical section of soil. It extends from the surface to the parent material. Each layer in a soil profile is called a soil horizon. Horizon O is the top - most layer where organic matter is present. This is based on the basic definitions and characteristics of soil profiles and their horizons in soil science.

Answer:

vertical; parent material; horizon; organic matter