B-horizon is also called

Options

A. top soil region
B. below soil region
C. sub-soil region
D. upper soil region

Answer

### Step-by-Step Solution:

1. **Understanding Soil Horizons**: Soil is organized into layers known as horizons. Each horizon has distinct characteristics and functions. The main horizons include O, A, B, C, and R.

2. **Identifying the B-Horizon**: The B-horizon is the third layer of soil, situated below the A-horizon (topsoil) and above the C-horizon (substratum).

3. **Characteristics of the B-Horizon**: The B-horizon is where minerals leached from the upper layers accumulate. It is often denser and has less organic matter compared to the A-horizon.

4. **Common Name for B-Horizon**: The B-horizon is commonly referred to as the "subsoil." This name reflects its position beneath the topsoil (A-horizon) and its role in soil formation.

5. **Conclusion**: Therefore, the B-horizon is also called the subsoil.