The layers of an undisturbed and well-developed soil profile from top to bottom would be
A) A, B, C, E, O, R.
B) O, A, E, B, C, R.
C) A, B, C, E, R, O.
D) O, R, A, B, C, E.
E) O, R, E, A, B, C.

Question

Quizplus · Accepted Answer

The correct order of soil layers in an undisturbed and well-developed soil profile, from top to bottom, is O (Organic layer), A (Topsoil), E (Eluviation or leaching layer), B (Subsoil), C (Parent material), and R (Bedrock).

The Layers of an Undisturbed and Well-Developed Soil Profile from Top