A deep part of the seafloor where a subducting slab bends down. Ocean trench. An ocean trench is a deep, narrow valley in the ocean floor formed where one tectonic plate slides beneath another.
Ocean Trench: A deep part of the seafloor where a subducting slab bends down. Ocean trench. An ocean trench is a deep, narrow valley in the ocean floor formed where one tectonic plate slides beneath another.
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