AnswersTX-Environmental Systems-BCASUnit Test

Unit Test — Unit test Answers

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1
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Which of the following could be found on either public or private land?

A
state park
B
single-family residence
C
mine
D
factory
2
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Cities that have available space in surrounding areas, such as Los Angeles, are likely to experience upward growth rather than urban sprawl.

T
T
F
F
3

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
4

How does mining affect local populations?

A
Mining is a vital part of the economy of surrounding towns.
B
Mining introduces pollution into local water supplies.
C
Mining disrupts local populations of flora and fauna.
D
All of the above are true.
5

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
6

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

A
industry
B
construction
C
technology
D
all of the above
7

Foresters work for private companies as well as government agencies.

A
T
B
F
8

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
9

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
10

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
11

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.
12

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
13

The urban migration trend has stopped worldwide.

A
T
B
F
14

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
15

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.
16

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
17

Surface mining is more ecologically damaging than subsurface mining.

A
T
B
F
18

The high productivity of American agriculture is exemplified by _______.

A
low crop yields per farm worker
B
high crop yields per farm worker
C
the small cultivated area per inhabitant
D
the small cultivated area per farmer
19

A forester is _______

A
a person who cuts down trees
B
a park ranger
C
a person who manages and supervises land used for timber production
D
responsible for creating topographical maps of forests
20

Which of the following statements about rural communities is true?

A
Rural communities can support any population size.
B
More people in the United States live in rural communities than they did in 1900.
C
Rural communities were built based on the location of available resources.
D
People in developed countries are moving back to rural communities.

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