Question

What is a deep-ocean trench?


underwater mountains

deep underwater canyons

cracks in the oceanic crust

molten material eruption sites

Answer 1

A deep-ocean trench is best described as **deep underwater canyons**. These trenches are formed at subduction zones, where one tectonic plate is being pushed beneath another, creating some of the deepest parts of the ocean floor. They are significant geological features that can reach depths of over 10,000 meters (about 32,800 feet).