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  1. the continental crust is mostly granitic type rock, the oceanic crust is mostly basaltic rock, both include a variety of sedimentary and metamorphic rocks; it is in the solid state of matter
  2. the mantle is basaltic rock; it is in the solid state of matter but is plastic and flows slowly
  3. the core is a metal alloy composed mostly of nickel and iron; the outer core is in the liquid state of matter, the inner core is in the solid state of matter
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8y ago

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