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Quick Quiz

Any kind of rock can melt to form magma.

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Module of the day

Chemical Bonding

The millions of different chemical compounds that make up everything on Earth are composed of 118 elements that bond together in…

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Term of the day


[person] Greek natural philosopher born in Thrace (ca. 460-370 BCE). With his teacher, Leucippus, Democritus developed the atomist concept of the cosmos,…

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