Challenger Deep.
trench
continental margin deep-ocean basin
No. A mid-ocean ridge is a chain of mountains and volcanoes in an ocean basin at a site of sea floor spreading.
what happens is the ocean floor does not just keep spreading.instead, it sinks beneath deep underwater canyons called deep- ocean trenches
In the ocean floor.
Yes, ocean trenches are a long, narrow, deep depression in the ocean bed.They typically run parallel to a plate boundary.The Marianas Trench is the deepest part of the world's oceans.
probably..
Deep Trench in the ocean floor. It can sometimes be mistaken for a mid-ocean ridge.
the continental Margin, Ocean Basin Floor and Mid-Ocean ridge :D
an abyss
It is the Abyssal plain.
deep ocean trench