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OpenStudy (justuu):
Evan finds a rock. He scrapes it with his fingernail and leaves a scratch. His rock must be: a metamorphic rock harder than feldspar softer than diamond made of more than one mineral
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OpenStudy (anonymous):
I'm not 100% sure, I think we can eliminate metamorphic and harder than feldspar, i would go with softer than diamond
OpenStudy (justuu):
thank you
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