Unit Test — Unit test Answers

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21
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Which of the following is a stressful environmental condition found in degraded areas of New York City?

A
The soils are more contaminated, compacted, and disturbed.
B
There are too many essential organisms in the soil.
C
Surrounding wetlands absorb water too quickly.
D
Brownfields tend to be cooler and drier than other areas.
23

The main target when controlling the acidity of soils is ______.

A
neutralizing the pH
B
adding base
C
replacing lost cation nutrients
D
eliminating humic acids
24

Biological pest control involves _______.

A
eliminating pests with pesticides
B
using biological mechanisms to eliminate pests
C
planting a new crop every year
D
burning crops
25

Which of the following would be more likely to utilize capitalism-based land management methods?

A
city planners
B
federal regulators
C
corporate directors
D
all of the above
26

Which of the following is not a possible environmental consequence of urban sprawl?

A
deforestation
B
pollution
C
loss of natural resources
D
none of the above
27

Pesticides are best described as _______.

A
polluting chemicals toxic to all living things
B
chemicals that destroy 33% of the world’s potential food supply
C
toxic chemicals used to control weed populations
D
toxic chemicals used to control pest populations
28

How might environmental manipulation of a crop have unexpected consequences?

A
The new crop may require more water than the original.
B
The crop may harm the environment.
C
The yield may be reduced.
D
All of the above
29

Cities that have available space in surrounding areas, such as Los Angeles, are likely to experience upward growth rather than urban sprawl.

A
T
B
F
30

Which of the following is a way that minerals are used?

A
industry
B
construction
C
technology
D
all of the above
31

Which of the following is not true concerning cover crops?

A
they prevent soil erosion
B
they can fix nitrogen in soil
C
they are sold as cash crops
D
they add organic matter to soil
32

Which of the following methods of agriculture is the most reliant upon technology and automation?

A
rangeland grazing
B
American agriculture
C
traditional rice cultivation
D
Dutch agriculture
33

Which of the following best describes what led to London’s “killer fog” in 1952?

A
Pollution from the air contaminated the water supply which is what killed people.
B
Millions of coal fires and stagnant air caused toxic fumes to build up in the air.
C
Poor city design led to faulty ventilation in houses.
D
Soot from forest and wildfires in the surrounding areas blew over the city.
34

Which of the following is a reason conflicts over zoning decisions can become a divisive issue?

A
Zoning decisions are often wrong and result in significant financial hardship for a city.
B
Zoning decisions do not always change over time and can become antiquated.
C
Establishing zoning types is an expensive process.
D
Zoning regulations prevent new businesses from competing with established businesses.
35

Which of the following is a long-term consequence of mining on the Earth?

A
erosion
B
an open pit
C
sedimentation
D
all of the above
36

Foresters work for private companies as well as government agencies.

A
T
B
F
37

Where is the carbon taken in by plants during photosynthesis stored?

A
the ground
B
plant structures
C
the air
D
all of the above
38

Which of the following could be found on either public or private land?

A
state park
B
single-family residence
C
mine
D
factory
39

The urban migration trend has stopped worldwide.

A
T
B
F
40

Which of the following forest management practices keeps the forest in a state of mid to late succession?

A
clearcutting
B
uneven-aged
C
even-aged
D
seed-tree cutting

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