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Biology 24 Online
OpenStudy (anonymous):

Which geologic principle explains why the bottom stratum in a section of rock is the oldest? Cross-cutting relationships Superposition Unconformities Uniformitarianism

OpenStudy (anonymous):

superposition.. its literally word for word "secondary layers are placed on top of the first layers which are o the bottom blah blah blah" :D

OpenStudy (anonymous):

soup or position|dw:1338905263674:dw|

OpenStudy (anonymous):

|dw:1406844166612:dw| Im An Artist c:

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