Env. Sci. Ch. 7 Aquatic Ecosystems Review

The base of marine food web.

An organism that anchors itself to grasses or rocks.

Marine ecosystem...

Which of the following aquatic ecosystems are both littoral and benthic zones most likely found

Which of the following is a factor that influences where an organism lives in an ecosystem?

All of the following are examples of saltwater ecosystems except

Which ecosystem has the highest level of salinity?

In which aquatic zone would you likely find cattails and reeds?

bottom-dwelling organisms

What are the two main types of freshwater wetlands?

A marine ecosystem considered not productive.

In estuaries, fresh water and salt water mix, forming a...

One way wetlands control flooding is by

A wetland dominated by non-woody plants.

Why doesn't photosynthesis occur in deep ocean water?

Which of the following is not a threat to coral reefs?

The majority of marine organisms are found in

precipitation that can carry pollutants into aquatic ecosystems

An increase in nutrients in an aquatic ecosystem.

Most of the nutrients in an arctic ecosystem come from

A potential threat to an estuary.

Threat against a river ecosystem.

A freshwater ecosystem.

factor that determines where aquatic organisms live

Swamps are commonly found on 

What kind of water is found on the bottom of estuaries?

A threat against marine organisms.

An area where fresh water mixes with salt water.

Located near the bottom of a pond or lake.

An ecosystem found in shallow, tropical seas.

What is the source of most ocean pollution?

Aquatic zone found near the shore.

The type of plankton that produces most of the food in an aquatic ecosystem is called

A wetland dominated by woody plants.

The amount of dissolved salts in water.

Limestone ridges built by tiny animals.

Organisms that live in estuaries must adapt to changes in...

Free-swimming organisms.

Estuaries are productive ecosystems because they constantly receive nutrients from