1.
The ocean bottom that extends from a depth of 4,000 to 6,000m
2.
The portion of the pelagic division where sunlight is absent.
3.
The region of the ocean bottom that extends from the edge of the continental shelf to a depth of 4,000 meters
4.
The division of the ocean environment composed of the ocean bottom.
5.
A symbiotic relationship in which one organism benefits while the other is neither harmed nor benefited.
6.
The region of ocean between 150 and 450 meters deep where there is not enough light to power photosynthesis.
7.
The % of energy that is taken in as food by one trophic level & then passed on as food to the next highest trophic level.
8.
sequence of feeding relationships among a group of organisms that begins with producers and proceeds in a linear fashion to higher-level consumers.
9.
A representation of the complex feeding networks that exist in an ecosystem.
10.
the portion of the ocean bottom that lies at depths greater than 6,000 meters.
11.
The region of a shore that is covered by high tide and exposed at low tide.
12.
An animal whose presence in a community makes it possible for many other species to live there. Also known as a keystone predator.
13.
A symbiotic relationship in which both organisms benefit.
14.
All actively swimming organisms whose movements are not governed by currents or tides.
15.
The water that overlies the continental shelves, same as neritic zone.
16.
An organism’s role in its environment.
17.
The water that covers the deep ocean basins.
18.
A symbiotic relationship in which one organism benefits and the other is harmed.
19.
The division of the marine environment composed of the ocean’s water.
20.
The portion of the pelagic division of the ocean that receives enough sunlight to support photosynthesis.
21.
Organisms that float or drift in the sea’s currents.
22.
The part of the ocean bottom that extends from the line of lowest tide to the edge of the continental shelf.
23.
An intimate living arrangement between two different species of organism.
24.
An energy-storing level in a food chain.
25.
The ocean water in an ocean basin.
