From the land surface downward to the unweathered bedrock, which of the following is the correct order of the different soil horizons?
A)O, A, E, B, C, bedrock
B)A, B, C, D, E, bedrock
C)E, A, B, C, O, bedrock
D)D, E, C, B, A, bedrock

Question

Quizplus · Accepted Answer

The correct order of the different soil horizons from the land surface downward to the unweathered bedrock is O (organic matter layer), A (topsoil), E (eluviated layer), B (subsoil), C (weathered parent material), and bedrock. This is represented by choice A. Option B is incorrect because it starts with A and ends with bedrock, but it misses the E horizons, which are found between A and B. Option C is incorrect as it puts the E horizon before the A horizon, which is not the correct order. Option D is incorrect because it is not the generally accepted order of the soil horizons.

From the Land Surface Downward to the Unweathered Bedrock, Which