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The rise of atmospheric oxygen
[摘要] Clues from ancient rocks are helping to produce a coherent picture of how Earth's atmosphere changed from one that was almost devoid of oxygen to one that is one- fifth oxygen.
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[效力级别]  [学科分类] 
[关键词] MASS-INDEPENDENT FRACTIONATION;SULFUR;EVOLUTION;EARTH [时效性] 
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