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Process of Science
Theories, Hypotheses, and Laws
Theories are not based on one scientist's work but on an accumulation of evidence and...
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Chemistry
Atomic Theory I
The 19th and early 20th centuries saw great advances in our understanding of the atom....
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Scientists and Research
France Anne-Dominic Córdova
This module profiles the career of astrophysicist France Córdova, director of the National Science Foundation....
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