Ozone Hole: Revision history

12 April 2017

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• curprev 17:5617:56, 30 September 2008‎ Nbrewer talk contribs‎ 3,596 bytes +3,596‎ New page: == Monitoring the Ozone Hole == The ozone layer filters ultraviolet (UV) rays from sunlight and prevents too many of them from reaching the Earth, which would be harmful to the environmen...