Causes of Air Pollution: Natural Activities and Human Activities
'Ozone layer'...
Question
'Ozone layer' is located in
A
Troposphere
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B
Hydrosphere
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C
Stratosphere
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D
Lithosphere
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Solution
The correct option is C Stratosphere As ozone absorbs high-energy UV-B and UV-C energy waves from the sun and is broken down into atomic oxygen (O) and diatomic oxygen. Atomic oxygen is found prevalent in the upper stratosphere due to the bombardment of UV light and the destruction of both ozone and diatomic oxygen. The stratosphere is the second major layer of Earth's atmosphere, just above the troposphere, and below the mesosphere. It protects from the harmful ultraviolet (UV) radiations coming from the sun. This layer is also called as ozonosphere. It lies at an altitude of 23 to 25 kilometres over the equator and slightly lower altitude elsewhere.