Biodegradable pollutants is

Options

A. Plastic
B. Asbestos
C. Sewage
D. Mercury

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for an example of a biodegradable pollutant from the given options: plastic, asbestos, sewage, and mercury.

2. **Defining Biodegradable Pollutants**: Biodegradable pollutants are substances that can be broken down by natural processes, typically by the action of microorganisms like bacteria. This breakdown results in simpler, non-toxic substances.

3. **Analyzing the Options**:
- **Plastic**: This is a synthetic material that does not decompose easily and can persist in the environment for hundreds of years. Therefore, it is a non-biodegradable pollutant.
- **Asbestos**: This is a mineral fiber that is also non-biodegradable and poses health risks when inhaled. It does not break down naturally.
- **Sewage**: This consists of wastewater that contains organic matter such as human waste, food scraps, and other biodegradable materials. It can be broken down by microorganisms, making it a biodegradable pollutant.
- **Mercury**: This is a heavy metal that is toxic and does not decompose. It accumulates in the environment and is considered a non-biodegradable pollutant.

4. **Conclusion**: Among the options provided, sewage is the only biodegradable pollutant because it can be decomposed by microorganisms into simpler substances over time.

5. **Final Answer**: The correct option is sewage.

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