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BiologyOrigins of Life I
Since prehistoric times, people have pondered how life came to exist. This module describes investigations...
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Earth ScienceOrigins of Plate Tectonic Theory
The theory of continental drift was the first step toward plate tectonic theory, which became...
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Process of ScienceUncertainty, Error, and Confidence
There is uncertainty in all scientific data, and even the best scientists find some degree...
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