Asked by plz healep
                in order please 
Cenozoic,Mesozoic,Paleozoic,Precambrian
thanks
            
            
        Cenozoic,Mesozoic,Paleozoic,Precambrian
thanks
Answers
                    Answered by
            Ms. Sue
            
    http://image.slidesharecdn.com/ecgsmodule7-141129222553-conversion-gate02/95/ecgs-module-7-15-638.jpg?cb=1417300032
    
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