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Biology 19 Online
OpenStudy (nerdsarecool):

Scientists found rock deep in the earth and determined it was 3 billion years old. This rock is most likely which type of rock igneous metmorphic metamorphic limestone

OpenStudy (anonymous):

idk if its igneous or metamorphic but I'm pretty sure its metamorphic, what do u think van

OpenStudy (anonymous):

again i don't really remember this stuff,I did this in like 5th grade

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