Which one is correct about atmosphere ozone

Options

A. it acts as protector
B. it acts as destroyer
C. both A and B
D. It has no role in atmosphere.

Answer

**Step-by-Step Solution:**

1. **Understanding Ozone**: Ozone is a molecule made up of three oxygen atoms, represented as O3. It exists in different layers of the atmosphere, primarily the stratosphere and the troposphere.

2. **Ozone in the Stratosphere**: In the stratosphere, ozone acts as a protective layer. It absorbs the majority of the sun's harmful ultraviolet (UV) radiation, which is crucial for protecting living organisms on Earth from potential damage caused by these rays.

3. **Ozone in the Troposphere**: In contrast, when ozone is present in the troposphere (the lowest layer of the atmosphere), it acts as a pollutant. Here, it can combine with other pollutants and contribute to smog formation, which can be harmful to human health and the environment.

4. **Evaluating the Options**:
- **Option A**: "Acts as a protector" - This is true for stratospheric ozone.
- **Option B**: "Acts as a destroyer" - This is true for tropospheric ozone.
- **Option C**: "Both A and B" - Since both statements are true, this option is correct.
- **Option D**: "Has no role in the atmosphere" - This is false as ozone plays significant roles in both protecting from UV radiation and contributing to pollution.

5. **Conclusion**: The correct answer is **Option C**: Both A and B.

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