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Ozone layer is present in


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The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet (UV) radiation. It contains high concentrations of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.
Ozone layer is present in thermosphere
Hence (b) is the correct answer.
answered Jan 20, 2014 by sreemathi.v
edited Nov 21, 2017 by sharmaaparna1