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ChemistryNuclear Chemistry I
This module explores radioisotopes resulting from unstable atomic nuclei. You will learn how they decay...
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Scientists and ResearchBernardo Houssay
Dr. Bernardo Houssay was a pioneering researcher of the endocrine system, the system of glands...
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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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