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BiologyGene Expression
Through a look at the devastating Tay-Sachs disease and other hereditary conditions, this module explores...
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ChemistryThe Periodic Table of Elements II
This module traces the history of the periodic table of the elements. In the mid-1800s,...
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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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