Marine Ecosystems Review

Where are coral reefs found?

• Polar waters

• temperate, mid-latitude waters

• tropical waters

• only near volcanos

Carbon dioxide and seawater combine to form

• calcium carbonate
• carbon monoxide
• carbonic acid 

Marine organisms make their shells from calcium and

• chloride
• carbonate
• seawater

An example of a marine organism that needs calcium carbonate 

• a crab
• a shark
• an octopus

What are tiny organisms that float near the surface of the water?

• plankton
• organisms
• abiotic factor
• insects

The _________ zone is the ocean floor.

• intertidal
• neritic
• oceanic
• benthic

The __________ zone is the place where the ocean meets the land.

• intertidal
• neritic
• oceanic
• benthic

Why doesn’t photosynthesis occur in deep ocean water?

• The water temperature is too cold

• There is no sunlight

• There are not enough nutrients

• The salinity level of the water is too high

the production of light by means of a chemical reaction in an organism

• transition zone

• deep zone

• bio-luminescence

• surface zone

Area of ocean that extends from the low-tide line out to the edge of the continental shelf

• deep zone

• neritic zone

• open ocean

• aphotic zone