Earthworm live in the burrows which are made

Options

A. Due to habit of swallowing soil
B. In the compact soil by the thin tapering anterior end assisted by hydrostatic pressure of coelomic fluid compartments
C. In soft soil rich in humus by mere pushing in of the body
D. All of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Earthworm Habitat:**
Earthworms are known to live in burrows that they create in the soil. These burrows serve as their habitat, providing them with protection and access to food.

2. **Soil Interaction:**
Earthworms play a crucial role in soil ecology. They swallow soil and organic matter, which they break down into simpler forms. This process enriches the soil with nutrients, improving its quality and fertility.

3. **Movement Mechanism:**
Earthworms move through muscle contractions and relaxations. They have a coelomic fluid that provides hydrostatic pressure, allowing them to push their bodies through the soil. This movement is essential for creating and maintaining their burrows.

4. **Burrowing in Soil:**
Earthworms prefer soft soil rich in organic matter (humus). They use the anterior (front) part of their bodies to push into the soil, creating burrows that serve as their living spaces. This burrowing behavior is vital for their survival and for the aeration of the soil.

5. **Conclusion:**
Based on the above points, it can be concluded that earthworms live in burrows made by their own actions of swallowing and breaking down soil, moving through muscle contractions, and pushing into soft, nutrient-rich soil. Therefore, the correct answer to the question is that earthworms live in burrows made due to all these processes.

**Final Answer:**
All of the above options are correct regarding where earthworms live and how they create their burrows.

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