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Earth Sciences 12 Online
OpenStudy (anonymous):

More Science Review!! When you write with naturally occurring chalk, you're crushing and smearing what? Which mineral has the greatest hardness after diamond? A hardness of 3 on the hardness scale is___ @Jonaho

OpenStudy (anonymous):

@Jonaho

OpenStudy (anonymous):

@Jonaho

OpenStudy (jonaho):

When you write with naturally occurring. chalk, you're crushing and smearing the calcite-shell remains of. once-living ocean organisms ============================================================ wurtzite boron nitride ======================================================= Gypsum

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