Ecotone is

Options

A. a polluted area
B. the bottom of a lake
C. a zone of transition between two com- munities
D. a zone of developing community

Answer

**Step-by-Step Solution:**

1. **Understanding the Concept of Ecotone**:
- An ecotone is a transitional zone between two distinct ecosystems or communities. It represents an area where two different ecological communities meet and integrate.

2. **Identifying Ecosystems**:
- Consider two ecosystems, for example, a forest ecosystem (Ecosystem A) and a grassland ecosystem (Ecosystem B). The area where these two ecosystems meet is referred to as the ecotone.

3. **Characteristics of Ecotones**:
- Ecotones are characterized by a mixture of species from both ecosystems. This means that the organisms found in the ecotone will include species from both the forest and the grassland.

4. **Evaluating Options**:
- The question likely provides multiple-choice answers. We need to evaluate these options to determine which one correctly defines an ecotone.
- The correct option should describe it as a zone of transition between two communities.

5. **Conclusion**:
- Based on the definition and characteristics of an ecotone, the correct answer is that it is a "zone of transition between two communities."

**Final Answer**:
- An ecotone is a zone of transition between two communities.

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