Which among these pollutants would kill the forest trees ?

Options

A. Benzene
B. Benzpyrene
C. `NO_(2)`
D. PAN

Answer

To determine which pollutant would kill forest trees, we need to analyze the options provided and understand the effects of each pollutant on vegetation.

### Step-by-Step Solution:

1. **Identify the Pollutants**: We need to look at the list of pollutants provided in the question. The transcript mentions PAN (Peroxyacetyl Nitrate), benzene, benzopyrene, and nitrogen dioxide (NO2).

2. **Understand PAN**: The transcript indicates that PAN is particularly harmful to forest trees. PAN is a component of photochemical smog and is formed from the reaction of volatile organic compounds (VOCs) and nitrogen oxides in the presence of sunlight.

3. **Effects of PAN**: According to the transcript, PAN acts as a powerful respiratory and eye irritant. Its presence, even in small concentrations, can lead to significant damage to natural vegetation, including forest trees. High concentrations can exacerbate these effects, leading to deforestation.

4. **Compare with Other Pollutants**: The transcript mentions that benzene, benzopyrene, and NO2 do not have as severe effects on forest trees as PAN does. While these pollutants can be harmful, they do not specifically lead to the same level of damage to vegetation as PAN.

5. **Conclusion**: Based on the information provided, the pollutant that would kill forest trees is PAN (Peroxyacetyl Nitrate).

### Final Answer:
The pollutant that would kill the forest trees is **PAN (Peroxyacetyl Nitrate)**.

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