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OpenStudy (anonymous):

An asteroid impact is thought to have ended which era? A. Cenozoic B. Paleozoic C. Precambrian D. Mesozoic @Destinymasha

OpenStudy (destinymasha):

Mesozoic -it killed all the dinos

OpenStudy (anonymous):

wow your fast :O

OpenStudy (destinymasha):

:} you're welcome

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