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A catastrophic disturbance that resulted in mass extinction marks the boundary of which two eras? A.Precambrian time and Paleozoic era B. Paleozoic era and Cenozoic era C. Mesozoic era and Cenozoic era
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A catastrophic disturbance that resulted in mass extinction marks the boundary of which two eras?

A.Precambrian time and Paleozoic era
B. Paleozoic era and Cenozoic era
C. Mesozoic era and Cenozoic era
D.None of the above

User Nvrs
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3 votes
The Answer Will Be C
User Vsarunov
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The answer might be A
User Pjehan
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