At the End of the Cretaceous (K/T Boundary) What Unusual

question 37

Multiple Choice

At the end of the Cretaceous (K/T boundary) what unusual geologic phenomenon occurred that has been linked to mass extinction and the end of the dinosaurs?

• A) A 10 km diameter meteor impact occurred on the Yucatan peninsula.
• B) The climate abruptly warmed and massive weathering of iridium poisoned the seas
• C) Enormous outpourings of basaltic lavas built the Rocky Mountains in British Columbia.
• D) Dinosaurs were hunted to extinction by Klingons.

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