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ChemistrySubstances
This module explores substances through hypothetical and real-world examples. Substances are broadly classified as pure...
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Scientists and ResearchUncovering the Mysteries of Chronic Mountain Sickness
The air has less oxygen at high altitudes, and the physiology of the body changes...
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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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