Current Science

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The United Nations General Assembly has designated 16 September as the International Day for the Preservation of the Ozone Layer.

Ozone, a gas naturally present in the atmosphere, is found in two regions - about 10% of the atmospheric ozone is in the troposphere and about 90% resides in the stratosphere. In the stratosphere, oxygen that is broken down by ultraviolet radiation from the sun recombines to form ozone.


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