Which of these describes the most widely held scientific theory on what catastrophic events led to the Cretaceous–Tertiary extinction about 65.5 million years ago, which eventually led to the extinction

Which of these describes the most widely held scientific theory on what catastrophic events led to the Cretaceous–Tertiary extinction about 65.5 million years ago, which eventually led to the extinction of dinosaurs?

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Which of these describes the most widely held scientific theory on what catastrophic events led to the Cretaceous–Tertiary extinction about 65.5 million years ago, which eventua…

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