AnswersSC332 Environmental Science BSoil and Agriculture

Week 6 Test Answers

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1
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Unexpected consequences can result from human interference or manipulation of any sufficiently complicated natural system.

A
T
B
F
2
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Which of the following best describes the uses of private land?

A
Private land cannot be used to operate businesses.
B
After initial construction. the uses of private land do not change.
C
It can be used for a variety of activities and businesses.
D
None of the above.
3

How can zoning laws be beneficial to a city’s residents?

A
They prevent new business development.
B
They can prevent new development that would harm established residents.
C
They limit the maximum height of buildings.
D
They restrict who can live in a city.
4

Which of the following is not a possible consequence of surface mining?

A
increased pollution
B
improved ecosystem health
C
destruction of flora and fauna
D
erosion of soil
5

Which of the following best explains why clear-cutting forests is more destructive than selectively cutting down trees in forests?

A
Clear-cutting eliminates all trees leaving none behind to maintain soil fertility or house native animals.
B
Clear-cutting places the land at greater risk for wildfires.
C
Clear-cutting makes land more attractive for human development.
D
Clear-cutting causes less soil erosion than selective cutting.
6

Which of the following is an example of a nonmetallic mineral?

A
sulfur
B
lead
C
aluminum
D
gold
7

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
8

Which of the following is true concerning land management methods for corporations.

A
The best strategy is a combination of government regulation and voluntary cooperation.
B
The best strategy is to rely on businesses to voluntarily pursue green business practices.
C
Corporations do not follow established land management strategies.
D
The best strategy is to impose government regulations on land management methods.
9

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
10

Long-term mineral extraction has no lasting consequences.

A
T
B
F
11

The long term effects of mining include _______.

A
acid drainage
B
erosion
C
dust emissions
D
all of the above
12

Describe how zoning laws can protect and benefit homeowners.

Answer not available
13

Placer mining involves _______ to extract minerals.

A
removing the top layer of earth
B
tunneling under the earth
C
dredging sediments from the water bottom
D
none of the above

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