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On the subducting side of the island arc is a deep and narrow oceanic trench, which is the trace at the Earth ’ s surface of the boundary between the downgoing and overriding plates.

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On the subducting side of the island arc is a deep and narrow oceanic trench, which is the trace at the Earth ’ s surface of the boundary between the downgoing and overriding plates.

Edit
Promote Demote Fragment Fix

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