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Science Chapter 6

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mineral
a solid object found in nature that has never been alive
rock
a naturally formed solid made of one or more minerals
igneous rock
rock that was once melted and then cooled and hardened
sedimentary rock
rock made when materials settle into layers and get squeezed until they harden into rock
metamorphic rock
rock that has been changed by heat or pressure
fossil
a trace or the remains of a living thing that died a long time ago