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BiologyExtinction
In this module, we’ll learn about how people have been uncovering evidence of extinct species...
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Scientists and ResearchLuis E. Miramontes
His name may not be familiar, but Mexican chemist Luis Miramontes was instrumental in a...
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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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