The regolith and soil are underlain by the
A) O horizon.
B) A horizon.
C) E horizon.
D) B horizon.
E) Bedrock.

Question

Quizplus · Accepted Answer

The underlying layer below the regolith and soil is typically bedrock. This is the solid rock that makes up the Earth's crust and is often the parent material from which soils develop over time. The other choices (O horizon, A horizon, E horizon, and B horizon) refer to layers within the soil profile itself, and are not applicable to the layer immediately below the regolith and soil.

The Regolith and Soil Are Underlain by the