Define Ecotone.

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Ecotone**: An ecotone is defined as a transitional area or zone that exists between two different ecological communities or ecosystems.

2. **Characteristics of Ecotones**:
- Ecotones are regions where two distinct plant communities meet and interact.
- They often exhibit a mix of species from both communities, leading to increased biodiversity.

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