Achilles Tang Posted July 14, 2009 Share Posted July 14, 2009 Drifting across the world's oceans are a group of unicellular marine microorganisms that are not only a crucial source of food for other marine life -- but their fossils, which are found in abundance, provide scientists with an extraordinary record of climatic change and other major events in the history of the Earth. View the full article Quote Link to comment Share on other sites More sharing options...
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