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At Some Cretaceous-Paleogene Boundary Sites, the Impact Hypothesis Is Supported

Question 59

Multiple Choice

At some Cretaceous-Paleogene boundary sites, the impact hypothesis is supported by the existence of ____.


A) high concentrations of platinum
B) shock-metamorphosed quartz grains
C) dinosaur fossils
D) the absence of dinosaur fossils
E) high concentrations of volcanic rocks

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