AnswersFL-2001340-Environmental Science Sem 2Sustainability

Sustainability — Cumulative exam Answers

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41
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Which of the following changes to waterways is only the result of human activity?

A
erosion
B
temperature fluctuations
C
flooding
D
chemical pollution
42
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Which of the following are important products of rainforests?

A
timber
B
pharmaceuticals
C
oxygen
D
all of the above
43

Why does fossil fuel use in the United States make the U.S. vulnerable to the political wishes of foreign countries?

A
The US is a net exporter of fossil fuels.
B
Fossil fuels lead to global climate change.
C
The US imports much of its petroleum from foreign countries which set the prices.
D
All of the above.
44

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
45

Which of the following aspects of society is the least affected by limiting factors?

A
location
B
health
C
behavior
D
stability
46

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.
47

Which of the following would be expected to have the greatest impact on primary productivity?

A
chemical energy
B
nutrient availability
C
solar energy
D
water availability
48

Which of the following most significantly determines a community's access to potable water?

A
access to clean raw water sources
B
the availability of money
C
local drought conditions
D
the level of industrial development
49

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.
50

Which of the following characteristics would be most crucial in land that is to be used for farming?

A
clear, distinct horizons with organic matter and mineral nutrients
B
no horizon development with large mineral deposits
C
large accumulations of organic matter
D
distinct horizons with minimal layers of organic material
51

Which of the following best explains why soil conservation is important to human agriculture?

A
Erosion prevention prevents millions of dollars in damage from mudslides.
B
It is easier to prevent the degradation of old soil than it is to generate new soil.
C
If the soil salinity gets too high crops will not be able to grow in it.
D
Soil contamination is a hazard to human and animal health.
52

Forest management practices can reduce the negative impact of wood harvesting.

A
T
B
F
53

Which of the following best explains why buildings tip during earthquakes?

A
Seismic waves damage buildings’ foundations.
B
The liquefaction of solid soil undermines buildings’ foundations.
C
Body waves break underground water pipes.
D
Surface faulting moves the ground in different directions.
54

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
55

Which of the following best explains how a hurricane can increase an area’s susceptibility to future storms?

A
Storm surges cause massive damage to buildings along coastlines.
B
Hurricanes often flood coastal communities.
C
Hurricane strength winds cause large amounts of property damage.
D
Erosion caused by hurricanes can leave coasts more exposed to storms.
56

The largest supply of Earth’s freshwater is stored in _______.

A
lakes and rivers
B
groundwater
C
the atmosphere
D
glaciers and icecaps
57

Which of the following is a benefit associated with the use of energy producing technologies excluding the burning of fossil fuels?

A
reduced water use
B
reduced air pollution
C
reduced habitat loss
D
all of the above
58

Which of the following is a possible cost of using renewable resources?

A
loss of animal species
B
land degradation
C
lower availability of freshwater
D
all of the above
59

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
60

Soil compaction results from _______.

A
the reduction or elimination of pore space in soil
B
the weight of heavy machinery on soil
C
livestock walking over soil
D
all of the above

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