what two-geological/oceanographic entities result from zones of subduction?

Question by brianarenee: what two-geological/oceanographic entities result from zones of subduction?
Please help, I have looked everywhere throughout my book and I can’t find anything having to do with the subject.

Best answer:

Answer by Alice
Deep sea trenches and island arcs with volcanoes ( a group of islands formed from volcanic activity, usually in a semi-circular shape). Also the Andes ( mountains in South America) were formed from the Nazca (oceanic) plate being forced under the adjacent continental plate :) Hope this helps

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