Between 3,000 and 6,000 meters below the ocean surface, over 50% of the earth's surface is covered by what kind of formation? abyssal plains continental shelves mid-ocean ridges underwater volcanoes

I believe that is the definition of Abyssal Pains.

what subject is this

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above