The environmental pollutants are

Options

A. physical pollutants
B. chemical pollutants
C. biological pollutants
D. all of these.

Answer

### Step-by-Step Solution:

1. **Understanding Environmental Pollutants**: Environmental pollutants are substances that cause pollution in the environment. They can be classified into different categories based on their nature and effects.

2. **Categories of Environmental Pollutants**:
- **Physical Pollutants**: These pollutants alter the physical characteristics of the environment. Examples include changes in color, temperature, or the presence of suspended solids and immiscible liquids.

- **Chemical Pollutants**: These include a wide range of harmful substances that can contaminate air, water, and soil. Examples of chemical pollutants are:
- Aerosols
- Heavy metals (like lead, mercury)
- Toxic chemicals (like pesticides)
- Volatile organic compounds (VOCs)

- **Biological Pollutants**: These pollutants are living organisms or their by-products that can cause harm to the environment and human health. Examples include:
- Bacteria
- Fungi
- Algae
- Pollen
- Pathogens

3. **Conclusion**: Since environmental pollutants can be classified into physical, chemical, and biological categories, the answer to the question "The environmental pollutants are" is **all of these**.

### Final Answer:
Environmental pollutants are chemical pollutants, physical pollutants, and biological pollutants; therefore, the answer is **all of these**.

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