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OpenStudy (anonymous):

Coal is formed when layers of plant matter accumulate at the bottom of a body of water and are protected from biodegradation and oxidization. Over time, the properties of the original material change. What evolutionary significance, if any, does this have?

OpenStudy (anonymous):

It is a form of fossilized plant and it can be used to study the plants that lived at the time.

OpenStudy (anonymous):

thanks

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