Humus is found in

Options

A. Top portion of soil
B. Middle portion of soil
C. Deep portion of soil
D. None of these

Explanation

**Step-by-Step Solution:**

1. **Understanding Humus**: Humus is a dark organic material in soil that forms from the decomposition of plant and animal matter. It is rich in nutrients and plays a crucial role in soil fertility.

2. **Location of Humus**: Humus is primarily found in the top layer of the soil. This layer is often referred to as the "topsoil" and is where most of the soil's organic matter is concentrated.

3. **Importance of Humus**: The presence of humus in the topsoil is vital because it enhances soil fertility, improves moisture retention, and supports the growth of plants by providing essential nutrients.

4. **Conclusion**: Based on the information, humus is found in the top portion of the soil.

5. **Final Answer**: Therefore, the correct answer to the question "Humus is found in" is the **top portion of soil**.

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