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Quick Quiz

Density is defined as

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Module of the day

Theories, Hypotheses, and Laws

Theories are not based on one scientist's work but on an accumulation of evidence and ideas from many scientists over time.…

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Term of the day

Andean margin

[noun] A convergent plate boundary, where oceanic crust is being subducted beneath continental crust. Named after the Andes Mountains in South America,…

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