Chapt. 19 Vocab.

Is the gradually sloping end of a continent that extends under the ocean.

Extends from the outer edge of the continental shelf down to the ocean floor.

Deposits that fill in valleys and create flat seafloor areas.

Is the area in an ocean basin where new ocean floor is formed.

Is a long,narrow,steep-sided depression where one crustal plate sink beneath another.

When plants and algae use energy from the sun to build their tissues and produce food.

Food webs that depend on bacteria.

Marine organisms that drift with the currents

Animals the actively swim.

The plants and animals that live on or in the seafloor.

Is the introduction of harmful waste products,chemicals,and substances not native to an environment.