Which one is nearly absent in ozonosphere ?

Options

A. Dust particles
B. Water vapours
C. `CO_(2)`
D. All the above.

Answer

To answer the question "Which one is nearly absent in ozonosphere?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Ozonosphere**:
- The ozonosphere is a layer of ozone (O3) located in the Earth's stratosphere. It plays a crucial role in absorbing harmful ultraviolet (UV) radiation from the sun.

2. **Identifying Components of the Ozonosphere**:
- The ozonosphere is characterized by a high concentration of ozone molecules, which are essential for filtering UV rays.

3. **Analyzing the Options**:
- The question provides several options, which typically include:
- Dust particles
- Water vapors
- Carbon dioxide (CO2)
- All of the above

4. **Evaluating Each Option**:
- **Dust Particles**: These are generally absent in the ozonosphere because their presence would interfere with the filtration of UV rays.
- **Water Vapors**: Similar to dust particles, water vapors can also disrupt the filtration process and are thus nearly absent.
- **Carbon Dioxide (CO2)**: CO2 can also interfere with the ozone layer's ability to filter UV radiation, making it nearly absent as well.

5. **Conclusion**:
- Since dust particles, water vapors, and CO2 are all components that would disrupt the filtration of UV rays, they are nearly absent in the ozonosphere. Therefore, the correct answer is "All of the above".

### Final Answer:
**All of the above (Dust particles, Water vapors, Carbon dioxide) are nearly absent in the ozonosphere.**

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