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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?
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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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