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What evidence could scientists use to determine that a mass extinction event had occurred at...

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Biology

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What evidence could scientists use to determine that a mass extinction event had occurred at a point in Earth s history A A drastic increase in the number of similarities between the structures of fossilized organisms and those of modern species OB A sudden increase in the variety of fossils in the fossil record C A decrease in the percentage of stable isotopes found in fossilized organisms D A sudden disappearance of many species and their biomarkers in the fossil record

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