Biochemical and organic rocks form from materials produced by living organisms.

a. true
b. false

Answer: a. true

Environmental & Atmospheric Sciences

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What air-mass contributes to the formation of thunderstorms in the central U.S.?

A) cA B) mT C) mP D) stormy ones

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A) Af B) Am C) BWk D) Csa E) Dfa

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The weight of a 10-kg mass at Earth's surface is about

A. 5 N. B. 1 N. C. 10 N. D. 100 N.

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