Which main compounds are causing damage to ozone layer ?

Explanation

**Step-by-Step Solution:**

1. **Identify the Ozone Layer**: The ozone layer is a region of Earth's stratosphere that contains a high concentration of ozone (O₃) molecules. It plays a crucial role in protecting life on Earth by absorbing the majority of the sun's harmful ultraviolet (UV) radiation.

2. **Understand the Compounds Responsible for Ozone Depletion**: Several compounds are known to contribute to the depletion of the ozone layer. The primary ones include:
- Nitric Oxide (NO)
- Chlorofluorocarbons (CFCs), commonly referred to as freons
- Free chlorine atoms
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