GEOLOGY

Detailed explanation-1: -The major significance of Antarctic bottom water is that it is the coldest bottom water, giving it a significant influence on the movement of the world’s oceans. Antarctic bottom water also has a high oxygen content relative to the rest of the oceans’ deep waters.

Detailed explanation-2: -The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean. All floors of the ocean are known as ‘seabeds’.

Detailed explanation-3: -Water gets colder with depth because cold, salty ocean water sinks to the bottom of the ocean basins below the less dense warmer water near the surface.

Detailed explanation-4: -The Abyssopelagic Zone (or abyssal zone) extends from 13, 100 feet (4, 000 meters) to 19, 700 feet (6, 000 meters). It is the pitch-black bottom layer of the ocean. The name (abyss) comes from a Greek word meaning “no bottom” because they thought the ocean was bottomless.