Depletion of the ozone layer

Pshenichnikova Ekaterina &

Elizarov SashaGymnasium №1

2015

What is the ozone layer?The ozone layer is a belt of naturally occurring ozone gas that sits 15 to 50 kilometers above Earth and serves as a shield from the harmful ultraviolet B radiation emitted by the sun.

What is the ozone layer and why is it important?

• The ozone layer is a concentration of ozone molecules in the stratosphere. About 90% of the planet's ozone is in the ozone layer. The layer of the Earth's atmosphere that surrounds us is called the troposphere. The stratosphere, the next higher layer, extends about 10-50 kilometers above the Earth's surface.

Chlorofluorocarbons (CFCs)

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