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anything made out of minerals


anything that is a solid, was formed in nature, and was never alive

igneous rock

a rock once melted, but cooled and hardened

metamorphic rock

any type of rock changed by heat and pressure

sedimentary rock

a rock that forms from material that is settled into layers

rock cycle

process of rocks changing into other types of rocks


something that has lasted from a living thing that died long ago


the loose material in which plants can grow


a soil made up of very small grains


a rich soil with lots of humus


soil made up of large grains


a part of soil made up of decayed parts of once living things


the movement of weathered rock and soil


the way rocks are broken down into smaller pieces


the shape of a plant or animal left in sediments when the rock formed


molds of leaves or other thin objects


formed when mud or minerals fill the mold

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