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BiologyDiscovery and Structure of Cells
Cells are the basic structural and functional unit of life. This module traces the discovery...
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General ScienceDensity and Buoyancy
Density is a fundamental physical property of matter. This module introduces the concept of density,...
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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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