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a boundary where earth's tectonic plates move toward each other. This causes a collision or subduction. This will result in the formation of volcanoes and mountain ranges.
a geological process in which one edge of a crustal plate is forced sideways and downward into the mantle below another plate
a crack in the earth's crust resulting from the displacement of one side with respect to the other
The process that creates new sea floor as plates move away from each other at the mid-ocean ridges
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