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The Mariana Trench is the deepest ocean trench on. This trench occurs at a plante boundary where

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Answer:

The Mariana Trench is part of the Izu-Bonin-Mariana subduction system that forms the boundary between two tectonic plates. In this system, the western edge of one plate, the Pacific Plate, is subducted (i.e., thrust) beneath the smaller Mariana Plate that lies to the west.

Step-by-step explanation:

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