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Biology, 23.06.2020 16:01 sin16

Which eras ended with a mass extinction? O A. Paleozoic and Precambrian
O B. Mesozoic and Paleozoic
OC. Mesozoic and Cenozoic
O D. Cenozoic and Paleozoic

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Which eras ended with a mass extinction? O A. Paleozoic and Precambrian
O B. Mesozoic and Pal...
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