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Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) … Wikipedia
Allotropes of carbon — Eight allotropes of carbon: a) Diamond, b) Graphite, c) Lonsdaleite, d) C60 (Buckminsterfullerene or buckyball), e) C540, f) C70, g) Amorphous carbon, and h) single walled carbon nanotube or buckytube. This is a list of the allotropes of carb … Wikipedia
Carbon — (), but as most compounds with multiple single bonded oxygens on a single carbon it is unstable.] Cyanide (CN–), has a similar structure, but behaves much like a halide ion (pseudohalogen). For example it can form the nitride cyanogen molecule… … Wikipedia
List of one-time The Simpsons characters — Further information: List of characters in The Simpsons and List of recurring characters in The Simpsons The following is a list of one time characters from the American animated television comedy series The Simpsons. Some of the… … Wikipedia

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