We know key information about the Precambrian from studying many items, including

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      stromatolites
      Precambrian rocks and ore deposits
      abundant Precambrian fossil fuels
      a and b
      all of the above
asked Mar 12, 2013 in Earth Science by anonymous
    

1 Answer

0 votes
a and b
answered Mar 15, 2013 by h20 ~Top Expert~ (6,320 points)



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