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Essentials Of Earth History
we usually think of the past as being divided into a historic period and a prehistoric period
<ol><li>materials and methods, </li><li>time and its measurement, </li><li>uniformity of change</li><li>layered rocks and the principle of superposition</li><li>fossils and the succession of life on eartyh</li><li>correlation</li><li>organizing the record</li><li>the cosmic beginnings</li><li>the earth takes form</li><li>the rock record begins and life appears</li><li>the early paleozic periods</li></ol>
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