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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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BiologyBiodiversity II
According to recent estimates, humans have significantly altered roughly 75% of land-based environments, resulting in...
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Scientists and ResearchPercy Lavon Julian
The module traces the life and career of organic chemist Percy Julian, who developed a...
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