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clay saturated with water moving rapidly down a slope
process whereby rocks of different sizes become detached as a result of weathering, and fall to...
(also called a water cycle) the cycle of evaporation and condensation that controls the...
the division of the world into the developed northern hemisphere and less developed southern...
an instrument that records the arrival and strength of an earthquake's shock waves
one mass of the same rock that does not have strata or bedding planes