Question

How ocean trenches and mid-ocean ridges formed?

Answer 1

I don’t really know but you can go and click on ask or take a picture of it or search it and what subject is it

Answer 2

Answer:

Explanation:

The oceanic lithosphere is formed at an oceanic ridge, while the lithosphere is subducted back into the asthenosphere at ocean trenches. ... A process previously proposed to contribute to plate motion and the formation of new oceanic crust at mid-ocean ridges is the "mantle conveyor" due to deep convection