Why is earthworm called a hemaphrodite animal ?

Explanation

### Step-by-Step Solution:

1. **Definition of Earthworm**:
- An earthworm is a reddish-brown terrestrial invertebrate that primarily inhabits the upper layers of moist soil.

2. **Role of Earthworms in Soil**:
- Earthworms are often referred to as "farmer's friends" because they burrow through the soil, which helps aerate it and makes it more porous. This process improves soil quality and promotes plant growth.

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