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Cambrian

Brief History of Life

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Student Worksheet?Biology Strand: Heredity and Evolution Name___________________________ Date__________________ School_________________ Student?please print this worksheet and complete it as you interact with the tutorial. The completed worksheet should be turned in to your assigned teacher. Tutorial: Brief History of Life Complete the table while you go through the lesson. PERIOD YEARS AGO CHARACTERISTIC LIFE FORMS Precambrian 550 mya (million years ago) Cambrian
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