Weathered bedrock or weathered parent material (regolith),excluding the unweathered bedrock itself,is designated the ________ horizon.
A)A
B)B
C)C
D)O
E)R

Question

Quizplus · Accepted Answer

The C horizon is the layer of regolith that lies beneath the A and B horizons and consists of weathered bedrock or parent material. It is distinguished from the unweathered bedrock of the R horizon. The A and B horizons are the layers of topsoil that contain organic matter and are crucial for plant growth. The O horizon is the organic layer on the soil surface, while the R horizon is the unweathered bedrock.

Weathered Bedrock or Weathered Parent Material (Regolith),excluding the Unweathered Bedrock