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Scientists can determine if oxygen existed in Earth's Archean atmosphere by A. looking at the amount of salt content in rocks. B. determining the lack of oxidation that occurred. C. looking for
oxidized iron in rocks. D. determining how many people survived.
Scientists can determine if oxygen existed in Earth's Archean atmosphere by - - C. LOOKING FOR OXIDIZED IRON ROCKS.
Expert answered|yumdrea|Points 3360|
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Asked 316 days ago|12/13/2013 12:46:00 PM
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