Which one is not dangerous

Options

A. Biopollutants
B. Ozone layer
C. Nuclear blast
D. Deforestation

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which option is not dangerous among biopollutants, ozone layer, nuclear blast, and deforestation.

2. **Analyzing Each Option**:
- **Biopollutants**: These are substances that cause pollution and can be harmful to health and the environment. Therefore, biopollutants are dangerous.
- **Ozone Layer**: This layer in the atmosphere protects us from harmful UV radiation from the sun. Without it, we would be at a higher risk of skin cancer and other health issues. Thus, the ozone layer is beneficial and not dangerous.
- **Nuclear Blast**: This is a catastrophic event that can cause massive destruction and loss of life. Therefore, a nuclear blast is extremely dangerous.
- **Deforestation**: This refers to the clearing of forests, which can lead to loss of biodiversity, climate change, and other environmental issues. Hence, deforestation is also dangerous.

3. **Identifying the Correct Answer**: After analyzing all options, the ozone layer is the only option that is not dangerous. It serves a protective role in the environment.

4. **Conclusion**: The correct answer to the question "Which one is not dangerous?" is the ozone layer (Option B).

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