The word topsoil is commonly used,but not always correctly.The proper definition is ________.
A)the A,E and B horizons
B)the dark,organic rich layers of O and A
C)the entire soil down to the base of the C horizon
D)only the O horizon

Question

Quizplus · Accepted Answer

The dark, organic-rich layers of O and A are what is commonly referred to as topsoil. While it can also include the E and B horizons, it is not the entire soil down to the base of the C horizon, nor is it only the O horizon.

The Word Topsoil Is Commonly Used,but Not Always Correctly