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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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Earth SciencePlate Boundaries
Earthquakes and volcanoes can reveal a lot about plate boundaries. This module looks at the...
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ChemistryAcids and Bases II
Our bodies constantly produce carbon dioxide, some of which stays in the blood and becomes...
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