Which soil region is the most fertile soil layer where the roots of most herbaceous plants are located?

Question

Quizplus · Accepted Answer

The A horizon, also known as the topsoil layer, is the most fertile part of the soil profile. It is rich in organic material and nutrients, making it the primary layer where the roots of most herbaceous plants are located. This layer is crucial for plant growth due to its high fertility and ability to retain moisture.

Which Soil Region Is the Most Fertile Soil Layer Where