| http://www.w3.org/ns/prov#value | - ??? ??? ??? mechanical weathering The breaking of rock into smaller pieces by forces due to gravity, ice, plant, roots or other forces. ??? ??? ??? crust Earth's outermost and thinnest layer ??? ??? ??? sedimentary Rocks that form when layers of materials and rock particals settle on top of eachother, than harden. ??? ??? ??? chemical weathering The changing of materials in a rock by chemical proc
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