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Process of ScienceTheories, Hypotheses, and Laws
Theories are not based on one scientist's work but on an accumulation of evidence and...
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BiologyCell Division II
Beginning with the discovery of mitosis, the module details each phase of this cell process....
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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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