Explain the following:
Ozone hole

Explanation

### Step-by-Step Solution:

1. **Definition of Ozone Hole**:
The term "ozone hole" refers to the depletion of the protective ozone layer in the Earth's atmosphere.

2. **Location of the Ozone Layer**:
The ozone layer is located in the upper part of the atmosphere, specifically in a region called the stratosphere.

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