Complete the following sentence.
Worms and small organisms grow mostly in __________.

Options

A. Sub-soil
B. Top-soil
C. Bed-soil
D. All of these

Answer

To complete the sentence "Worms and small organisms grow mostly in __________," we need to identify the correct environment where these organisms thrive.

1. **Identify the Environment**: Worms and small organisms typically live in soil. However, not all soil layers are suitable for their growth.

2. **Focus on Soil Layers**: The soil is made up of different layers: topsoil, subsoil, and bedrock. The topsoil is the uppermost layer and is rich in organic matter.

3. **Characteristics of Topsoil**: The topsoil contains a lot of decaying organic materials, which provide nutrients. This layer is also where the majority of microorganisms, including worms, are found.

4. **Role of Microorganisms**: Microorganisms in the topsoil break down dead materials, converting them into simpler forms that can be used as food. This process contributes to the fertility of the soil.

5. **Conclusion**: Based on the characteristics of the soil layers and the presence of nutrients, we can conclude that worms and small organisms grow mostly in the topsoil.

Final Answer: Worms and small organisms grow mostly in **topsoil**.

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