Question

which of the following horizons in this soil profile contains the highest concentration of parent material?
choose 1 answer:
a a
b b
c c
d o

Explanation:

The C - horizon of a soil profile is composed of weathered parent material. It is closer to the un - weathered bedrock and has a higher concentration of the original parent material compared to the A (topsoil with organic matter), B (sub - soil with accumulation of minerals leached from A), and O (organic layer on the surface).

Answer:

C. C