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Exam 24: Aquatic Ecosystems

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Question 31

True/False

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As a stream flows down its course,it generally becomes warmer and slower.

A) True
B) False

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Question 32

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What is missing from the profundal zone?

A) nutrients
B) light
C) fish
D) fungus

E) B) and C)
F) None of the above

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Question 33

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Which order of stream would likely be found at the highest elevation?

In the ocean,swimming organisms that can move at will in the water column are referred to as

Swimming organisms in the ocean that are able to move at will in the water column are referred to as nekton.

In the benthic zone of lakes and ponds,organisms that are attached to or move on a submerged substrate but do not penetrate it are referred to as ________.

What are present in the photo?

If a stream has an average depth of 3 meters,an average width of 4 meters,and an average stream velocity of 0.24 m/s,what is the discharge rate or streamflow (Q) ?

The water above the continental shelf belongs to the ________ province of the pelagic zone.

In lakes and ponds,oxygen concentrations are lowest in the

As a stream or river descends,it generally grows

In lakes and ponds,the open-water zone extending to the depth of light penetration is referred to as the ________ zone.

Phytoplankton thrive in the limnetic zone of lakes and ponds.

Inflowing river waters most often impoverish rather than fertilize estuaries.

The cells of reef-building corals are inhabited by symbiotic species of

The general term for flowing bodies of freshwater is ________.

The organisms living on the bottom of the ocean are collectively referred to as

Which of the following would have the fastest flow,given the same discharge?

In lakes and ponds,the depth at which respiration balances photosynthesis is referred to as the ________ depth of light.

Barrier reefs are separated from land by shallow lagoons.