Decomposition is

Options

A. The process of recycling of nutrient in the ecosystem
B. Anaerobic process
C. Faster if detritus is rich in lignin and chitin
D. Slower in warm and moist enviroment

Answer

### Step-by-Step Solution:

1. **Understanding Decomposition**:
- Decomposition is the process through which organic matter is broken down into simpler inorganic substances. This includes the transformation of complex organic materials into carbon dioxide, water, and essential nutrients.

2. **Identifying the Steps of Decomposition**:
- The process of decomposition involves several steps:
- **Fragmentation**: Breaking down of organic matter into smaller pieces.
- **Leaching**: The process where soluble substances are washed out from the organic matter.
- **Catabolism**: The breakdown of complex molecules into simpler ones by microorganisms.
- **Humification**: The formation of humus from decomposed organic matter.
- **Mineralization**: The final step where nutrients are released back into the soil.

3. **Factors Affecting Decomposition**:
- Decomposition is primarily an aerobic process, meaning it requires oxygen.
- The rate of decomposition is influenced by the chemical composition of the detritus (the dead organic matter).
- If the detritus is rich in lignin and chitin, the decomposition process is slower. Conversely, if it is rich in nitrogen and water-soluble substances (like sugars), the decomposition is faster.

4. **Environmental Conditions**:
- Temperature and soil moisture are crucial climatic factors that affect the rate of decomposition.
- A warm and moist environment promotes faster decomposition, while low temperatures and anaerobic conditions (lack of oxygen) slow down the process.

5. **Evaluating the Options**:
- **Option A**: "The process of recycling of nutrient in the ecosystem" - This is correct as decomposition recycles nutrients back into the ecosystem.
- **Option B**: "Anaerobic process" - This is incorrect since decomposition primarily requires oxygen.
- **Option C**: "Faster if the detritus is rich in lignin and chitin" - This is incorrect; it is slower with lignin and chitin.
- **Option D**: "Slower in warm and moist environment" - This is incorrect; warm and moist conditions actually speed up decomposition.

6. **Conclusion**:
- The correct answer is **Option A**: "The process of recycling of nutrient in the ecosystem".