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Earth ScienceThe Carbon Cycle
Carbon, the fourth most abundant element in the universe, moves between the atmosphere, oceans, biosphere,...
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Scientists and ResearchFrance Anne-Dominic Córdova
This module profiles the career of astrophysicist France Córdova, director of the National Science Foundation....
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ChemistryAcids and Bases I
Whether maintaining water quality in a fish tank or suffering from acid indigestion, we encounter...
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