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Biology 15 Online
OpenStudy (anonymous):

Sedimentary rocks are usually ___________ A. layered B. crystallized C. formed from magma D. black

OpenStudy (anonymous):

layered

OpenStudy (anonymous):

Sedimentary rocks were laid down at the bottom of ancient oceans. They are composed of the insoluble bits of tiny organisms. Phascolarctos is correct.

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