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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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BiologyTaxonomy I
Modern taxonomy officially began in 1758 with Systema Naturae, the classic work by Carolus Linnaeus....
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ChemistrySolutions
Aqueous solutions are found throughout our world, and their chemistry depends in part on how...
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