Why should we be worried about ozone depletion?

Explanation

### Step-by-Step Text Solution:

1. **Understanding Ozone Layer**: The ozone layer is a region of the 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. **Importance of Ozone Layer**: The ozone layer acts as a shield, preventing harmful UV rays from reaching the Earth's surface. These UV rays can cause severe health issues and environmental problems.

3. **Causes of Ozone Depletion**: Ozone depletion is primarily caused by human-made chemicals, such as chlorofluorocarbons (CFCs), halones, and other ozone-depleting substances. These chemicals break down ozone molecules in the stratosphere, leading to a thinner ozone layer.

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