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6.17. In Wikipedia, look up "Chicxulub crater" and answer this question: The Chicxulub impact is thought to be responsible for the extinction of the dinosaurs. What is the evidence that the Chicxulub crater was due to an asteroid impact?a. It contains an abundance of iridiumb. It contains an abundance of shocked quartzc. It has the shape of an impact crater included a peak ring.d. All the above
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