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Created page with "==Key Stage 4== ===Meaning=== An '''ocean trench''' is a very deep region of the ocean formed at a plate boundary undergoing subduction."
==Key Stage 4==
===Meaning===
An '''ocean trench''' is a very deep region of the [[ocean]] formed at a [[Tectonic Plate Boundary|plate boundary]] undergoing [[subduction]].
===Meaning===
An '''ocean trench''' is a very deep region of the [[ocean]] formed at a [[Tectonic Plate Boundary|plate boundary]] undergoing [[subduction]].