Ozone+Chemical+Patterns

What is Ozone? Ozone is molecule made of 3 oxygen atoms bonded together (O3)

How does Ozone exist in nature?
 * it exists in upper levels of space layers (stratosphere) 12-20 km up
 * reflects most high energy U.V before reaching Earth's surface
 * because it's very active ,it's really harmful to come down to the ground level, if it did it will damage our tissues, sinuses and lungs.

How is Ozone formed?