Oceans and Estuaries

Which horizontal zone is represented mostly by the shore of the ocean?

• the oceanic zone

• the neritic zone

• the intertidal zone

• the twilight zone

Which of the following represents a role of an estuary? Mark all that apply.

• they serve as environmental filters

• they circulate nutrients

• they serve as nurseries (habitats) for many aquatic organisms

• all of these are correct

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When nutrients in estuaries accumulate faster than they are removed, what can potentially occur?

• an increase in the population of fish

• eutrophication

• an increase in the population of people who live nearby

• an increase in plant life

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How can upwelling benefit fisherman?

• it helps bring fish and other aquatic organisms to the surface

• it gives them more of a challenge to catch fish

• it helps them create boundaries with sharks and other predators

• it helps them float their boats

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This ​ (a)   is composed of a mixture of both salt and freshwater (brackish water). It is great for ​ (b)   . One of the largest and most productive estuaries in the United States is located at ​ (c)   .

• estuary

• marsh

• Chesapeake Bay, Virginia

• New River, Virginia

• Lake Superior, Michigan

• fishing

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What biome is where salt and freshwater mix? The Chesapeake Bay is an example!

• Aquatic

• Freshwater

• Marine

• Estuary

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This estuary is known as the largest estuary in NC.

• Neuse Wetlands

• Pamlico Sound

• Roanoke Delta

• Chowan Basin

The vertical zones in the ocean are characterized by which of the following?

• how much sunlight or not is present in each

• the amount of fish found in each

• the amount of salt found in each

• the presence of bioindicators found in each

Which will most likely result if there is increased upwelling in a coastal area?

• more aquatic life

• fewer nitrates

• less nutrients in the water

• higher water temperatures

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Estuaries have what is described as "brackish" water. This is used to describe the content of the water. What does "brackish" mean in this sense?

• salt and freshwater mix

• complete saltwater

• complete freshwater

• mostly groundwater