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Every time you step outside, ozone, a gaseous molecule of three oxygens, makes it possible for you to do so without reaping the harmful effects of the sun's radiation. This helpful ozone is found in the stratosphere, which is the atmospheric layer just above where life exists and weather occurs.
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1.It prevents the harmful ultra violet rays from reaching us.
2.It absorbs the UV rays.
3.Reduces the pollutants from the surface of the earth
4.acts as  a shield.
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