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Earth ScienceIdentifying Minerals
Minerals are classified on the basis of their chemical composition, which is expressed in their...
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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 ScienceWeather, Fronts, and Forecasts
Before you go out for the day, you probably check the weather to help determine...
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