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question_answer1) A subject that deals with the study of the earth?s internal and external structures as well as properties of rocks and minerals.
question_answer2) A type of rock that is named after a Latin word meaning ?of fire?.
question_answer3) A type of rock that is named after a Latin word meaning ?settling down?.
question_answer4) A type of rock that is named after a Greek word meaning ?change of forms?.
question_answer5) Another name for the upper layer of the crust.
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