The importance of ecosystem lies in-

Options

A. Flow of energy
B. Cycling of materials
C. Both (1) and (2)
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Ecosystem Components**:
- An ecosystem consists of biotic (living organisms) and abiotic (physical environment) components. The interaction between these components is crucial for the functioning of the ecosystem.

2. **Identifying Key Characteristics**:
- The two main characteristics of any ecosystem are the flow of energy and the cycling of materials. These characteristics are essential for maintaining the balance and sustainability of the ecosystem.

3. **Flow of Energy**:
- Green plants (producers) play a vital role in the ecosystem by trapping solar energy through photosynthesis. They convert this energy into a usable form (glucose), which is then transferred to other organisms (consumers) through food chains and food webs.

4. **Cycling of Materials**:
- The cycling of materials refers to the bio-geochemical cycles, where nutrients are recycled in the ecosystem. Decomposers, such as bacteria and fungi, break down dead organic matter and release nutrients back into the environment, which are then reused by plants and other organisms.

5. **Conclusion**:
- Therefore, the importance of ecosystems lies in both the flow of energy and the cycling of materials. The correct answer to the question is "both one and two."

**Final Answer**: The importance of ecosystem lies in both the flow of energy and the cycling of materials.

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