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Biology, 28.10.2020 04:20 ilovecatsomuchlolol

Easy 35 points > You have a piece of quatz, whos hardness is 7, and an unknown mineral. explain how you would determine if the unknown mineral had a hardness greater or less then 7.

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Easy 35 points > You have a piece of quatz, whos hardness is 7, and an unknown mineral. explain h...
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