Question

Deep ocean trenches are associated with

Answer 1

Deep-sea trenches generally lie seaward of and parallel to adjacent island arcs or mountain ranges of the continental margins. They are closely associated with and found in subduction zones that is, locations where a lithospheric plate bearing oceanic crust slides down into the upper mantle under the force of gravity.

Answer 2

Heya,

Here is the answer:-

Deep-sea trenches generally lie seaward of and parallel to adjacent island arcs or mountain ranges of the continental margins. They are closely associated with and found in subduction zones—that is, locations where a lithospheric plate bearing oceanic crust slides down into the upper mantle under the force of gravity.

Thanks..