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3
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a person who studies the structure of the earth
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5
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the solid matter that settle to the bottom in a liquid
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6
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a hard, natural material of mineral origin, a stone
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8
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to pack, to squeeze
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1
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an opening in the earth's crust where melted rock, lava, gases and ash are thrust onto the land
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2
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changed in form
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4
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produced by fire, volcanic
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7
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a precious or semiprecious stone
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