How many of the following pollutants are considered as non-viable particulate pollutants? Smoke, dust, fungi, mists, moulds , algae, smog, bacteria, fumes.

Answer

To determine how many of the listed pollutants are considered non-viable particulate pollutants, we will analyze each pollutant one by one based on their characteristics.

### Step-by-Step Solution:

1. **Identify the pollutants**: The pollutants listed are smoke, dust, fungi, mists, moulds, algae, smog, bacteria, and fumes.

2. **Define non-viable particulate pollutants**: Non-viable particulate pollutants are non-living particles that do not reproduce or grow. They can transport living organisms but are not themselves alive.

3. **Analyze each pollutant**:
- **Smoke**: Non-living, produced from combustion. **(Non-viable)**
- **Dust**: Composed of tiny particles, non-living. **(Non-viable)**
- **Fungi**: Living organisms, cannot be non-viable. **(Viable)**
- **Mists**: Consist of tiny water droplets, non-living. **(Non-viable)**
- **Moulds**: Living organisms, cannot be non-viable. **(Viable)**
- **Algae**: Living organisms, cannot be non-viable. **(Viable)**
- **Smog**: A mixture of smoke and fog, non-living. **(Non-viable)**
- **Bacteria**: Living organisms, cannot be non-viable. **(Viable)**
- **Fumes**: Gaseous byproducts from combustion, non-living. **(Non-viable)**

4. **Count the non-viable pollutants**: From the analysis, the non-viable pollutants are:
- Smoke
- Dust
- Mists
- Smog
- Fumes

5. **Total count**: There are 5 non-viable particulate pollutants.

### Final Answer:
The number of pollutants that are considered non-viable particulate pollutants is **5**.

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