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08-11-2017
Advanced Placement (AP)

contestada

Which era does the rock from the Canadian Shield date back to

A Precambrian

B Paleozoic

C Mesozoic

D Cenozoic

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Slipknot Slipknot

08-11-2017

A Precambrian the Canadian shield dates back almost 4 billion years ago about the same time as the Precambrian eon.

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