Cumulative Exam — Cumulative exam Answers

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Which of the following statements about wetlands is not true?

A
There is more than one type of wetland.
B
Wetlands can contain either freshwater or saltwater.
C
Wetlands exist in a small range of climates.
D
Wetlands support a variety of organisms.
43

Why are cane toads in Australia considered an invasive species rather than simply nonnative?

A
They are destructive to native species and have no natural predators.
B
They reproduce more quickly than native species.
C
They have venom glands.
D
Large adult specimens are able to hunt snakes.
44

The principle difference between point source and nonpoint source water pollution is _______.

A
whether the pollution is organic or inorganic
B
the number of sources of pollution
C
the amount of pollution
D
whether it is from commercial or agricultural sources
45

The Kyoto protocol works by _______.

A
mandatory involvement
B
voluntary involvement
C
imposing trade restrictions on nonparticipating countries
D
offering monetary rewards to participating countries
47

What important function do stream pools serve?

A
Stream pools serve as a habitat for juvenile fish.
B
Stream pools serve as a habitat for organisms that have difficulty in feeding or navigating swifter areas of the stream.
C
They have greater depth and lower velocity than other parts of the stream, thus allowing a habitat for organisms during dryer seasons.
D
All of the above
48

Which of the following can be reduced by the use of renewable energy sources?

A
social costs
B
economic costs
C
environmental costs
D
all of the above
49

It is important to maintain septic systems in order to _______.

A
prevent treated sewage from contaminating groundwater
B
process human waste into fertilizer
C
prevent untreated sewage from contaminating groundwater
D
none of the above
50

Which of the following are important products of rainforests?

A
timber
B
pharmaceuticals
C
oxygen
D
all of the above
51

What is an advantage of using nuclear power?

A
Nuclear power is generated at a lower cost than traditional methods.
B
Nuclear power produces less pollution than traditional methods.
C
Nuclear power is more efficient than traditional methods.
D
All of the above
52

Carbon credits are used to _______.

A
rehabilitate tropical rainforests
B
reduce the emission of volatile organic compounds (VOC’s)
C
regulate how much carbon dioxide a country can emit
D
coordinate carbon sequestration activities
54

Which of the following is true of coral?

A
It is located in deep sea regions.
B
It supports few species.
C
It is composed of a single large and complex coral organism.
D
It is composed of thousands of individual coral organisms.
57

Which of the following is the most important factor in achieving sustainability?

A
ending nonrenewable resource use
B
agricultural practices
C
resource management
D
ending pesticide use
59

Which of the following statements about turning points in environmental policy is true?

A
Environmental policy has changed over time as a result of pressure from industry.
B
Turning points in environmental policy were typically the result of urban expansion.
C
Turning points in environmental policy have come about through increased public awareness.
D
Environmental policy has changed little over the history of the United States.

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