Freshwater
Saltwater
Organisms
Threats
Random
100

Wetland dominated by nonwoody plants.

Marsh

100

An ecosystem where a river empties into the ocean, mixing fresh and salt water. 

Estuary

100

Give an example of a drifter. 

Phytoplankton & Zooplankton

100

Which aquatic ecosystem is adversely affected by runoff?

a) rivers

b) oceans

c) estuaries 

d) All of the above 

d) All of the above
100

Provide an example of a marine mammal. 

Whale

200

Located near the bottom of a pond or lake. 

Benthic Zone

200

Marine ecosystem dominated by trees with stilt-like roots. 

Mangrove Swamps

200

Use stinging tentacles to capture prey. 

Coral 

200

Threat against river ecosystems. 

Dams

200

How deep can sunlight penetrate and organisms can still do photosynthesis?

100 meters

300

Which ecosystem has the highest salinity?

a) salt marsh 

b) brackish marsh 

c) river

d) pond 

a) salt marsh

300

Ocean zone where no sunlight penetrates. 

Aphotic 

300

Free swimming organisms.

Nekton

300

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

a) oil spills

b) sewage

c) pesticides

d) phytoplankton

d) phytoplankton

300

What percentage of ocean life depends on coral reefs for survival.

25%

400

Wetland dominated by woody plants.

Swamps

400

The most productive zone of a marine ecosystem. 

Surface zone

400

Mussels, worms, and barnacles. 

Benthos

400

What causes coral to "bleach"?

Warming temperatures

400

What island were research able to capture coral fluorescence. 

New Caledonia

500

Increase in nutrients in an aquatic ecosystem. 

Eutrophication 

500

Base of marine food chains.

Phytoplankton

500

Give an example of a mutualistic symbiotic relationship highlighted in the Chasing Coral film. 

Sea anemone/Clownfish

500

What causes most coastal pollution in the United States?

a) lakes and ponds

b) industrial waste and sewage

c) overfishing 

d) temperature changes 

b) industrial waste and sewage

500

What was the name of the research group from the Chasing Coral film?

Exo Catlin Seaview Survey