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22 January, 17:15

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

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Answers (2)
  1. 22 January, 18:06
    0
    The answer might be A
  2. 22 January, 20:47
    0
    The Answer Will Be C
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Home » Chemistry » 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
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