Photochemical smog is related to the pollution of :

Options

A. Air
B. Water
C. Soil
D. Nostoc.

Answer

**Step-by-Step Solution:**

1. **Understanding Photochemical Smog**: Photochemical smog is a type of air pollution that occurs when sunlight reacts with pollutants in the atmosphere.

2. **Identifying Pollutants**: The primary pollutants involved in the formation of photochemical smog are nitrogen oxides (NOx) and volatile organic compounds (VOCs). These pollutants are often released from the combustion of fossil fuels.

3. **Role of Sunlight**: Sunlight plays a crucial role in the formation of photochemical smog. The energy from sunlight triggers chemical reactions that convert the primary pollutants into secondary pollutants, which are harmful to health and the environment.

4. **Conclusion**: Since photochemical smog is formed through reactions involving air pollutants and sunlight, it is directly related to air pollution. Therefore, the correct answer to the question is that photochemical smog is related to the pollution of air.

**Final Answer**: Air

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