The rock are easy to found but not to take up .
igneous rock = a rock formed when melted rock material cools and hardens .
The igneous rock are cooled intrusive o extrusive .
sedimentay rock = a ock made of bits of matter joined together .
The clay is asediment of shale .
fossil = any remains o impint of living things of the past .
metmorphic rock = a rock formed unde heat and pressue from another kind of rock.
In the process the original ock does not melt under heat and pressure .
humus = decayed plant or animal material in soil .
Humus is decayed plant or animal mateials .
pollution = adding any harmful substance to earth 's land, water. or air .
rock cycle = rocks changing fom one form into another in a never - ending series of processes.
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Ttake alot of year .he rock cycle never end and
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