Cementation, A natural process where by rocks are in, Ore, The way that living things change over time., Alloy, A combination of a metal with other types of metal or elements, Lava, The preserve remains of an animal or a plant which has hardened into rocks, Fossil, A process by which dissolved minerals among sediments crystallize and stick the sediments together., Evolution, A rock that contains a useful metal or valuable mineral., Magma, Molten rock that flows from a volcano., Weathering, The wearing down and removal of rocks and soil by natural processes., Geology, The study of the earth including the rocks and soil, Erosion, Hot molten rock

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