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How can scientists use evidence to determine whether a mass extinction event occurred at a...

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Biology

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How can scientists use evidence to determine whether a mass extinction event occurred at a certain point in Earth s history A They can look for new structures and biomarkers in the fossils of many species B They can look for a high level of radioactive isotopes in the fossils from that time period OC They can look for the disappearance of many species and their biomarkers in rock layers D They can look for similarities in the structures of fossilized species when compared with those of modern species

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