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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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BiologyMembranes II
For living things to survive, different molecules need to enter and leave cells, yet cell...
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BiologyMass Extinctions
The most recent mass extinction was about 65 million years ago, well before humans began...
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