the abyssal plain is the broad, flat part of the deep-ocean basin, and supports much life. depth about 4,000 meters deep.
It is mountan area
it is in the ocean Ah, the more SPECIFIC answer!. The Abyssal plain is the Flat SEAFLOOR!
an abyssal plain is a flat or very gently sloped area of the ocean floor
The abyssal plains are made of basalt escaping from large underwater fissures in the earth's crust. As the molten rock is expelled from these fissures, it spreads out and cools, forming vast areas of...