Composting: Vegetable peels :: Vermicomposting: _________

Answer

To solve the analogy "Composting: Vegetable peels :: Vermicomposting: _________", we need to identify what is used in vermicomposting that corresponds to how vegetable peels are used in composting.

### Step-by-Step Solution:

1. **Understand Composting**:
- Composting is a process where organic waste materials, such as vegetable peels, are decomposed to create humus, a nutrient-rich substance beneficial for plant growth.

2. **Identify the Key Component of Composting**:
- In composting, the primary material used is vegetable peels along with other organic waste.

3. **Understand Vermicomposting**:
- Vermicomposting is a specific type of composting that involves the use of earthworms to help break down organic waste into humus.

4. **Identify the Key Component of Vermicomposting**:
- In vermicomposting, while organic waste is still used, the key additional component is earthworms.

5. **Complete the Analogy**:
- Since vegetable peels are to composting what earthworms are to vermicomposting, the answer to the analogy is "earthworms".

### Final Answer:
Composting: Vegetable peels :: Vermicomposting: Earthworms

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