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Earth SciencePlate Boundaries
Earthquakes and volcanoes can reveal a lot about plate boundaries. This module looks at the...
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Math in ScienceScientific Notation
The blue whale weighs approximately 190,000 kilograms, while a plankton weighs just 0.5 milligrams—a difference...
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BiologyPhotosynthesis I
Through photosynthesis, plants harvest energy from the sun to produce oxygen and sugar, the basic...
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