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| _________ are mixtures of minerals and other earth materials. |
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| ___________ form when melted rock cools and hardens. Some igneous rocks form from magma beneath Earth's surface. |
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| _____________ form from bits of sediment that are packed together and cemented. |
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| Heat and pressue from forces inside Earth form _______________. |
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| Over time, igneous, sedimentary, and metamorphic rocks can change from one rock type to another. |
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| packing together and cementing of sediments |
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