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BiologyLipids
Fats, oils, waxes, steroids, certain plant pigments, and parts of the cell membrane – these...
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Earth ScienceOcean Currents
Ocean currents are responsible for transporting matter and energy across the ocean. They are driven...
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ChemistryThe Periodic Table of Elements I
The modern periodic table is based on Dmitri Mendeleev’s 1896 observations that chemical elements can...
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