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Rocks

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Rock s are the solids made up of minerals which are natural solids were are placed in soils.
Rocks can be so hard or very soft and we useing sledgehummer to break them up.
they can also contain clay which is a water mixed with minerals, organic materials which are plants or animals and small peaces of rock.
they are three basic types of rock:
-metamorphic
-sedimentary
-igneous

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