History: Ozone Layer

9 November 2017

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27 February 2015

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29 March 2013

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22 January 2013

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18 December 2011

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6 November 2011

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19 August 2008

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• curprev 20:5620:56, 19 August 2008‎ Kristoffer R Message Wall contribs‎ 686 bytes +686‎ New page: The ozone layer is a layer in Earth's atmosphere which contains relatively high concentrations of ozone (O3). This layer absorbs 93-99% of the sun's high frequency ultraviolet light, which...