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News: Corals May Have Defense Against Global Warming
http://news.nationalgeographic.com/news/2007/10/071004-fossil-coral.html
 
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Ice age

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Lisa Wolfe
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« on: September 24, 2010, 01:24:54 pm »


La bildo estas kopiita de wikipedia:en. La originala priskribo estas: Graph of CO2 (Green graph), temperature (Blue graph), and dust concentration (Red graph) measured from the Vostok, Antarctica ice core as reported by Petit et al., 1999. Higher dust levels are believed to be caused by cold, dry periods.
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