The rate of decomposition of detritus is accelerated

Options

A. If the detritus contains lignin chitin, tannins and cellulose.
B. If the detritus is present in acidic soil
C. If the moisture and aeration are at optimum
D. If the temperature is below `10^@C`

Answer

To solve the question regarding the rate of decomposition of detritus, we will analyze each option provided and determine which condition accelerates the decomposition process.

### Step-by-Step Solution:

1. **Understanding Decomposition**: Decomposition is the process by which organic substances are broken down into simpler organic or inorganic matter. This process is crucial for nutrient cycling in ecosystems.

2. **Analyzing Option 1**:
- Option 1 states that the rate of decomposition is accelerated if detritus contains lignin, chitin, tannins, and cellulose.
- **Evaluation**: While cellulose can decompose, lignin and tannins are complex compounds that are more resistant to decomposition. Thus, this option is incorrect.

3. **Analyzing Option 2**:
- Option 2 states that the rate of decomposition is accelerated if the detritus is present in acidic soil.
- **Evaluation**: Acidic conditions can slow down the decomposition process because many decomposers prefer neutral to slightly alkaline conditions. Therefore, this option is also incorrect.

4. **Analyzing Option 3**:
- Option 3 states that the rate of decomposition is accelerated if moisture and aeration are at optimum levels.
- **Evaluation**: This is correct because adequate moisture and oxygen are essential for the activity of decomposers like bacteria and fungi, which thrive in such conditions. Thus, this option is the correct answer.

5. **Analyzing Option 4**:
- Option 4 states that the rate of decomposition is accelerated if the temperature is below 10 degrees Celsius.
- **Evaluation**: Low temperatures generally inhibit the activity of decomposers, slowing down the decomposition process. Hence, this option is incorrect.

### Conclusion:
The correct answer is **Option 3**: The rate of decomposition of detritus is accelerated if the moisture and aeration are at optimum levels.

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