Ch. 7 Aquatic Ecosystems Review

Coral reefs are intricately shaped rocklike structures that are formed as a result of

As they flow down a mountain to flatter ground, rivers generally become

A _____ lake has a large amount of plant growth due to nutrients

Estuaries are very productive ecosystems because they receive fresh nutrients from

Marine ecosystem...

Which of the following is NOT an environmental function of wetlands

What causes most coastal pollution in the U.S.

long, thin _____ islands typically run parallel to a shore

What is the source of most ocean pollution?

Because water ____ sunlight, photosynthesis is limited to the upper 100 meters of the ocean

Free-swimming organisms.

Corals live only in shallow, ____ water where there is enough light for photosynthesis

Threats to the ocean ecosystem are

The amount of dissolved salts in water.

Which organism produces most of the food in an aquatic ecosystem?

What are the two main types of freshwater wetlands

Estuaries

The types of organisms found in a pond or lake depend on

in the ____ zone, the water is cool and dark

Excessive nutrient growth in an aquatic ecosystem can be accelerated by

Which of the following is NOT characteristic of wetlands?

many rivers originate from ____ in mountains

bottom-dwelling organisms

Why doesn't photosynthesis occur in deep ocean water?