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ChemistryThe Periodic Table of Elements III
The periodic table can be used to predict bonding patterns among different elements, based on...
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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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Scientists and ResearchFranklin Chang Díaz
Franklin Chang Díaz, the first Latin American to travel to space, ties the record for...
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