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BiologyCharles Darwin II
The second in a series discussing the work of Charles Darwin, this module takes a...
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BiologyPaleontology and the Fossil Record
Paleontologists study fossils to understand ancient organisms. While fossils might look simple enough, they provide...
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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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