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Earth Sciences 7 Online
OpenStudy (anonymous):

What event marks the end of both the Paleozoic Era and Mesozoic Era? A. the ice age B. the appearance of birds C. a mass extinction of plants and animals D. the breakup of a supercontinent

OpenStudy (anonymous):

C. The mass extinction of plants and animals

OpenStudy (anonymous):

ty

OpenStudy (anonymous):

wait

OpenStudy (anonymous):

oh no. i alreaedy asked this and someone said ige age im confused now

OpenStudy (anonymous):

I don't get it how it is the Ice age

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