AnswersOK-Environmental Science-Sem B -CA- 36431BUnit Test

Unit Test — Unit test Answers

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1
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The urban migration trend has stopped worldwide.

A
T
B
F
2
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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
3

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
4

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

A
state park
B
single-family residence
C
mine
D
factory
5

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

A
industry
B
construction
C
technology
D
all of the above
6

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.
7

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
8

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.
9

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
10

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.
11

Surface mining is more ecologically damaging than subsurface mining.

A
T
B
F
12

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
13

Why does mining have such an impact on the environment?

A
Mining only affects the living parts of the environment.
B
Because minerals are within the Earth’s surface, extraction causes destruction.
C
Mining requires the absolute destruction of an area to be cost-effective.
D
Areas that are mined can never again sustain plant life.
14

Which of the following is not a consequence of moving from underground mining to surface mining?

A
increased land degradation
B
increased water and air pollution
C
mining collapses
D
changes to the landscape
15

Which of the following is a way in which surface mines impact an environment ecologically?

A
soil erosion
B
introducing new species of flora and fauna
C
creation of groundwater systems
D
all of the above
16

Which of the following readings is used to determine the availability of minerals?

A
radioactivity
B
magnetism
C
gravity
D
all of the above
17

Which of the following statements about pesticides is true?

A
Pesticides provide plants with essential nutrients.
B
Pesticides prevent the destruction of crops.
C
Pesticides are never harmful to plants.
D
Pesticides are never harmful to animals.
18

What are the two types of minerals?

A
industrial and environmental
B
valuable and invaluable
C
metallic and nonmetallic
D
important and unimportant
19

Which of the following is not a common use for public land?

A
residences
B
roads
C
airports
D
parks
20

Which type of mining is likely the least harmful to the environment?

A
surface mining
B
placer mining
C
subsurface mining
D
none of the above

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