CFCs are responsible for

Options

A. Ozone layer depletion
B. Global warming
C. Acid rain
D. None of these

Answer

### Step-by-Step Solution:

1. **Understanding CFCs**: CFCs stand for chlorofluorocarbons. They are chemical compounds that contain chlorine, fluorine, carbon, and hydrogen.

2. **Sources of CFCs**: CFCs are commonly released into the atmosphere through various products such as refrigerants, aerosol sprays, and polymer foam.

3. **Chemical Reaction in the Atmosphere**: Once released into the atmosphere, CFCs undergo a chemical reaction where they release chlorine atoms.

4. **Role of Chlorine**: The chlorine atoms released from CFCs are harmful because they react with ozone (O3) molecules.

5. **Destruction of Ozone**: The chlorine binds to the ozone molecule (O3), forming a stable compound called chlorine monoxide (ClO) and releasing oxygen (O2) in the process. This reaction leads to the depletion of ozone in the atmosphere.

6. **Importance of Ozone Layer**: The ozone layer is crucial for life on Earth as it protects us from harmful ultraviolet (UV) radiation from the sun.

7. **Conclusion**: Therefore, CFCs are responsible for ozone layer depletion because they destroy ozone molecules, which are essential for protecting the Earth from UV rays.

### Final Answer:
CFCs are responsible for ozone layer depletion because they destroy ozone molecules.

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