What are the 5 major air pollutants?

Explanation

### Step-by-Step Solution:

1. **Understanding Air Pollutants**: Air pollutants are substances that, when present in the atmosphere in high concentrations, can cause harm to living organisms and the environment. They are unwanted particles or substances that exceed a tolerable limit.

2. **Identifying Major Air Pollutants**: There are five major air pollutants that are commonly recognized for their harmful effects on health and the environment.

3. **First Major Pollutant - Ozone (O3)**:
- Ozone in the stratosphere is beneficial as it protects us from harmful UV radiation.
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