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Ozone
The Earth has a Layer of Ozone at the Edge of the Stratosphere
The ozone layer is in a layer of the atmosphere called the stratosphere.

It contains most of atmospheres molecules, 03.

Ozone is formed when UV radiation from the Sun hits the oxygen molecules.

If the right…

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UVB can damage the DNA in cells and cause skin cancer, and is the main cause of sunburn.
UVA can also lead to skin cancer.

Both types causes the skin to age faster.

But, the UV radiation isn't all bad ­ in fact it's essential for us humans. We need…

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