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OpenStudy (anonymous):

will fan for help

OpenStudy (anonymous):

Which geologic era lasted the longest? A. Cenozoic B. Mesozoic C. Paleozoic D. Precambrian

OpenStudy (anonymous):

@adajiamcneal

OpenStudy (anonymous):

the Cenozoic lasted for 65 million years the Mesozoic 180 million Paleozoic around 300 million and the Precambrian around 4 billion years, making up around 80% of all geologic time so the answer is d

OpenStudy (anonymous):

thanks @memestars1000

OpenStudy (anonymous):

no problem

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