The ozone hole is a reduction in concentrations of ozone high above the earth in the stratosphere.

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The ozone hole is a real phenomenon that has been observed since the 1970s. It is caused by the release of man-made chemicals, particularly chlorofluorocarbons (CFCs), which break down ozone molecules in the stratosphere. The hole is most pronounced over Antarctica, but it can also be detected in other parts of the world. The depletion of ozone in the stratosphere is a concern because it allows more harmful ultraviolet radiation from the sun to reach the earth's surface, which can lead to a variety of health and environmental problems.

The Ozone Hole Is a Reduction in Concentrations of Ozone