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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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BiologyCellular Organelles I
Evolution isn't always about competition. It can also be about cooperation, as is the case...
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Scientists and ResearchTracking Endangered Jaguars across the Border
This module offers an in-depth profile of wildlife biologist Sergio Avila and his work to...
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