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BiologyReproduction
Living things reproduce either by making exact copies of themselves (asexual reproduction) or by combining...
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General ScienceThe Metric System
The metric system is the standard system of measurement in science. This module describes the...
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Scientists and ResearchFrance Anne-Dominic Córdova
This module profiles the career of astrophysicist France Córdova, director of the National Science Foundation....
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