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The solid mineral material forming part of the surface of the earth |
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Something that comes from nature |
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The feel or appearance of a surface or a substance |
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Having a rough surface or texture
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What something is made up of...
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Denoting rock that has been extruded at the earth's surface as lava or other volcanic deposits.
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A synthetic material made from a wide range of organic polymers such as polyethylene |
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A process of altering a metal by heating it in contact with a powdered solid |
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Rock formed by the solidification of molten magma. |
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