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 the given choices: biopollutants, ozone layer, nuclear blast, and deforestation.

2. **Analyzing the Options**:
- **Biopollutants**: These include bacteria, viruses, and parasites that can cause waterborne diseases like typhoid and cholera. Therefore, biopollutants are dangerous.
- **Ozone Layer**: The ozone layer is a part of the Earth's atmosphere that absorbs harmful ultraviolet (UV) radiation from the sun. It protects us from these harmful rays, making it not dangerous in its intact state.
- **Nuclear Blast**: Nuclear blasts are extremely dangerous due to their destructive power and the immediate harm they cause to people and the environment.
- **Deforestation**: The removal of trees leads to a variety of environmental issues, including loss of oxygen, climate change, and increased greenhouse gases, making it dangerous.

3. **Identifying the Correct Answer**: Among all the options, the ozone layer is the only one that is not dangerous. It serves a protective function by absorbing UV radiation.

4. **Conclusion**: The answer to the question is the ozone layer, as it protects life on Earth from harmful UV rays, while the other options pose significant dangers.