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Earth Sciences 9 Online
OpenStudy (caroline1218):

How do layers b and d compare in age? If rock layers between b and d have eroded away, what is the boundary between b and d called?

OpenStudy (anonymous):

Hm where is this question from i think i can help but only if it's not hrd for me and i'm only trying to help because ther's like literally nobody helping anyone right now...but i don't get the question is that all the info?

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