Who proposed that ecosystem is symbol of structure `&`function of nature

Options

A. Gardner
B. Odum
C. Tansley
D. Reiter

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks who proposed that the ecosystem is a symbol of the structure and function of nature.

2. **Identifying Key Terms**: The key terms in the question are "ecosystem," "structure," "function," and "nature."

3. **Recognizing the Contributor**: The term "ecosystem" was coined by a British botanist named A. G. Tansley.

4. **Explaining the Concept**: A. G. Tansley proposed that the ecosystem represents both the structure and function of nature. This means that ecosystems consist of living organisms (biotic components) and their physical environment (abiotic components).

5. **Defining Biotic and Abiotic Components**:
- **Biotic Components**: These include all living organisms such as plants, animals, and microbes that interact with one another.
- **Abiotic Components**: These consist of non-living physical and chemical factors, such as sunlight, water, soil, and climate.

6. **Conclusion**: Therefore, the correct answer to the question is that A. G. Tansley proposed that the ecosystem is a symbol of the structure and function of nature.

**Final Answer**: A. G. Tansley

---