Most rocks are
A.
mixtures of minerals.
B.
mixtures of cells.
C.
compounds made of minerals.
D.
compounds made of cells.

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

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answer is slate

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