#RFB-11000926Reading: Fill in the BlanksAcademic,CoreMedium
Dinosaurs' Extinction
Official Question Material
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The Cretaceous-Paleogene extinction event, which occurred approximately 66 million years ago, [blank] the end of the dinosaurs. The precise cause is debated; a leading theory suggests that a massive asteroid impact, [blank] with volcanic activity, led to a drastic climate change. Recent sedimentary evidence supports a [blank] event, possibly the Chicxulub impactor, which would have thrown enough dust and debris into the atmosphere to significantly [blank] the climate.
Sample Answer & Audio Transcript
The Cretaceous-Paleogene extinction event, which occurred approximately 66 million years ago, marked the end of the dinosaurs. The precise cause is debated; a leading theory suggests that a massive asteroid impact, combined with volcanic activity, led to a drastic climate change. Recent sedimentary evidence supports a catastrophic event, possibly the Chicxulub impactor, which would have thrown enough dust and debris into the atmosphere to significantly alter the climate.
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