Biology, 04.10.2021 04:10 renegade2020

A scientist rubs an unknown mineral against samples of calcite and apatite. The mineral leaves a scratch on both samples. Which of the following is the unknown mineral? (A)fluorite (B)apatite (C)calcite (D)gypsum

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A scientist rubs an unknown mineral against samples of calcite and apatite. The mineral leaves a scr...

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