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Biology 17 Online
OpenStudy (anonymous):

what do you think might have happened to mammals in the end of cretaceous extinction had not wiped out the dinosaurs

OpenStudy (trancenova):

Hmm well my off-the-cuff answer is this: Given the mass extinction of the dinosaurs allowed the expansion of the mammals into the niche's that dinosaurs left then if they had not gone extinct the mammals wouldn't have had the chance to expand and diversify.

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