Math & Science

Free online encyclopedia “about the Earth, its natural environments, and their interaction with society.”

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khan academy logoFree educational videos & practice questions for subjects like math (algebra, geometry, statistics, calculus and more), science (biology, chemistry and physics, computer science, etc.) finance, history, the humanities (art history) & so much more.

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Information & statistics on disease &ย conditions, ย healthyย living, environmental & workplace health & safety, and more.

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