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Which statement is true for all minerals? A.They have a crystalline structure. B.They contain useful metals. C.They are made of silicon and oxygen. D.They are too hard to be scr…

Which statement is true for all minerals? A.They have a crystalline structure. B.They contain useful metals. C.They are made of silicon and oxygen. D.They are too hard to be scr…
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Which statement is true for all minerals? A.They have a crystalline structure. B.They contain useful metals. C.They are made of silicon and oxygen. D.They are too hard to be scratched with a nail.

User Michael Gygli
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for K12 is A- They have a crystalline structure that is the correct answer
User Kombucha
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A. They have crystalline structure 
User Hevar
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