Which among the following ecosystems come under the category of micro ecosystems?

Options

A. Rainforests
B. Ponds
C. Lakes
D. Deserts

Explanation

**Step-by-Step Solution:**

1. **Understanding Micro-Ecosystems**:
- A micro-ecosystem refers to a small-scale ecosystem that is a subset of a larger ecosystem. It consists of a community of living organisms interacting with their physical environment.

2. **Analyzing the Options**:
- The options provided are:
- a) Rainforest
- b) Ponds
- c) Lakes
- d) Deserts

3. **Identifying Characteristics of Each Ecosystem**:
- **Rainforest**: A large, dense forest with high biodiversity, typically found in tropical regions. It is not small-scale.
- **Ponds**: Small bodies of still water that support a variety of life forms. They are limited in size and can be considered micro-ecosystems.
- **Lakes**: Larger bodies of water than ponds, supporting diverse ecosystems but are not classified as micro-ecosystems.
- **Deserts**: Large, arid regions with sparse vegetation and extreme conditions. They are extensive and not small-scale.

4. **Conclusion**:
- Among the options, ponds are the only ecosystems that fit the definition of micro-ecosystems due to their smaller size and contained ecological interactions.

5. **Final Answer**:
- The ecosystem that comes under the category of micro-ecosystem is **ponds**.

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