An ecosystem contains

Options

A. Green plants and animals
B. Green plants and decomposers
C. Green plants, animals, decomposers and abiotic environment
D. Producers and consumers

Answer

**Step-by-Step Solution:**

1. **Understanding the Ecosystem**: An ecosystem is defined as a structural and functional unit of ecology. It encompasses the interactions between living organisms and their environment.

2. **Components of an Ecosystem**: Ecosystems consist of two main types of components:
- **Biotic Components**: These are the living components of an ecosystem, which include:
- Green plants (producers)
- Animals (consumers)
- Decomposers (organisms that break down dead organic matter)
- **Abiotic Components**: These are the non-living components, which include:
- Air
- Temperature
- Light
- Water
- Soil

3. **Analyzing the Options**:
- **Option A**: Green plants and animals - This option is incomplete as it does not include decomposers or abiotic factors.
- **Option B**: Green plants and decomposers - This option is also incomplete as it does not include animals or abiotic factors.
- **Option C**: Green plants, animals, decomposers, and abiotic environment - This option includes all necessary components of an ecosystem.
- **Option D**: Producers and consumers - While this option mentions two important groups, it does not explicitly include decomposers or abiotic factors.

4. **Conclusion**: Based on the analysis, the most comprehensive option that includes all essential components of an ecosystem is **Option C**: green plants, animals, decomposers, and abiotic environment.

**Final Answer**: Option C is the correct answer.

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