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Give reason why leeches are considered a...

Give reason why leeches are considered as parasites.

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**Step-by-Step Solution:** 1. **Definition of Leeches**: Leeches are segmented worms that belong to the class Hirudinea. They are commonly found in freshwater environments. 2. **Feeding Behavior**: Leeches are considered parasites because they feed on the blood of other animals. They attach themselves to a host, which can be various animals, including humans. 3. **Nutritional Relationship**: By sucking the blood, leeches obtain their nutrition. This feeding process is essential for their survival and growth. ...
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