AnswersSC332 Environmental Science BResource Conservation

Resource Conservation — Cumulative exam Answers

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1
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Which of the following is not a zoning type?

A
commercial
B
residential
C
agricultural
D
slum
2
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Which of the following is true concerning sources of water pollution?

A
Mine wastes and heavy metals become water pollution through storm water runoff.
B
Biodegradable materials like food, wood, and leaves are not considered pollution.
C
Petroleum byproducts and fuels end up as pollution principally from oil spills.
D
Pesticides and herbicides do not commonly become water pollutants.
3

Alternative energy sources are always dependent upon favorable weather conditions.

A
T
B
F
4

Which of the following is true concerning continental crust?

A
It does not contain radioactive elements.
B
It mostly contains heavier and denser minerals than the mantle.
C
It efficiently transfers heat from the mantle to the surface.
D
None of the above
5

Energy efficiency strategies are based on the assumption that consumers will be willing to pay more in exchange for reduced energy use.

A
T
B
F
6

Earthquakes can _______.

A
trigger other earthquakes
B
cause tsunamis
C
cause billions of dollars in damages
D
all of the above
7

Which of the following best explains why air pollution that was once blamed for global cooling is now considered responsible for global warming?

A
Pollution began reflecting sunlight and heat rather than absorbing it.
B
Evidence of global warming became overwhelming.
C
Scientists mistakenly thought pollution reflected sunlight and heat rather than absorbed it.
D
Congress required scientists to assign a cause to global climate change.
8

Which of the following statements about large scale mineral extraction is true?

A
The economic benefits of large scale mineral extraction outweigh the environmental costs.
B
Large scale mineral extraction is more destructive than in the past.
C
Large scale extraction is vital to the economy of mining towns.
D
Mineral extraction cannot be done in ways that do not completely destroy the environment.
9

Minerals are extracted from the Earth through various mining practices.

A
T
B
F
10

Which of the following is not a source of air pollution related to human activities?

A
gasoline
B
garbage
C
forest fires
D
radon
11

Which of the following is not true concerning the usage of public land?

A
Public land is managed by federal and state agencies.
B
Unprotected lands exist inside federal parks.
C
Public land can be protected or unprotected.
D
Wilderness areas and state parks are protected.
12

Buffer zones _______.

A
can help regulate the acidity of aquatic ecosystems
B
help increase erosion rates
C
are set up around natural resource areas
D
all of the above
13

The scientific community disagrees about _______.

A
the rate of global climate change
B
the occurrence of global warming
C
the need for action
D
all of the above
14

It is unlikely that the United States will have further turning points in environmental policy, as most important issues have already been addressed.

A
T
B
F
15

Water conservation efforts have been wholly ineffective.

A
T
B
F
16

Human impact on streams and rivers is minimal.

A
T
B
F
17

Agricultural practices can lead to water pollution.

A
T
B
F
18

Which of the following is not a characteristic of the source of rivers and streams?

A
high oxygen levels
B
freshwater fish
C
cooler temperatures
D
murky waters
19

Which of the following is an example of a long-term change to ecosystems?

A
seasons
B
tide cycle
C
evolution
D
population growth
20

Global climate change will have no impact to life on the Earth.

A
T
B
F

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