Unit Test — Unit test Answers

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1
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How is renewable fuel use expected to change in the next decade?

A
It is expected to decrease.
B
It is expected to increase.
C
It is expected to fluctuate.
D
It is expected to remain the same.
2
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Which of the following practices will lead to sustainability?

A
increased groundwater pumping
B
fossil fuel use
C
conservation tillage
D
increased pesticide use
3

Hurricanes are more destructive than tornados due to _______.

A
coastal storm surges
B
their shorter duration
C
the combination of high winds and flood waters
D
all of the above
4

Which of the following best explains why deforestation increases the risk of floods in an area?

A
Tree leaves catch and retain rain water.
B
Trees block the free flow of water.
C
Deforestation increases precipitation.
D
Tree roots improve soil water retention.
5

Sedimentation accumulation found in bodies of water can be the result of _______.

A
fertilizer runoff
B
pesticides and herbicides
C
erosion from agricultural practices
D
all of the above
6

Changes to _______ can be ascribed to glacial melting.

A
Earth’s surface
B
CO2 levels
C
coral reefs
D
water pollution
7

Community redevelopment programs are primarily directed towards _______.

A
preventing pollution in commercial and residential properties
B
improving property values by eliminating blighted buildings
C
establishing basic sanitation in urban environments and communities
D
cleaning up abandoned, unused, and polluted properties
8

Which of the following is not a strategy for reducing health risks from chemicals?

A
eliminate the use of leaded gasoline
B
reduce the sulfur content of fuel
C
increase production of industrial chemicals
D
limit worker exposure to chemicals
9

Explain why pollution prevention is undertaken as the first strategy in minimizing environmental risk.

Answer:

Environmental risk can be managed by a number of strategies. The first employed is to prevent pollution at its source because this strategy eliminates the need to dispose of waste, restore habitats, or remediate contamination. In situations where pollution prevention is not possible or practical, then other strategies become important. Minimizing the amount of waste generated and properly disposing of the waste that is generated is one strategy, as is avoiding habitat damage.

11

Explain why using wind, solar, and biomass energy can lead to sustainable energy use.

Answer:

Wind, solar, and biomass energy are all forms of renewable energy. Wind and solar energy use do not deplete a natural resource as is the case with coal and oil use. Using renewable resources is a sustainable practice, because it allows for continued energy use. Coal and oil reserves will eventually be depleted beyond the energy demands of the population because they are nonrenewable resources. Wind, solar, and biomass energy, on the other hand, can meet current energy needs and continue to meet the energy needs of the future.

12

Endocrine disruptors are commonly found in _______.

A
pesticides
B
plastics and consumer products
C
industrial by-products
D
all of the above
14

What distinguishes brownfields from other land being considered for development?

Answer:

Brownfields are properties that are potentially polluted. Unlike other properties, their development may be complicated due to environmental laws and regulations. If they must be remediated before development or redevelopment, this can significantly increase the cost of the project and result in developers seeking alternate, less expensive locations.

15

How does mining impact the environment?

A
It has a positive impact on the environment by permanently altering the ecosystem.
B
It has a positive impact on the environment by releasing chemicals into the environment.
C
It has a negative impact on the environment by allowing toxic chemicals to harm wildlife.
D
It has a negative impact on the environment by providing new niches for wildlife to inhabit.
16

Which of the following best explains why deforestation increases the risk of floods in an area?

A
Tree leaves catch and retain rain water.
B
Trees block the free flow of water.
C
Deforestation increases precipitation.
D
Tree roots improve soil water retention.
17

Which of the following practices will lead to sustainability?

A
increased groundwater pumping
B
fossil fuel use
C
conservation tillage
D
increased pesticide use
18

Hurricanes are more destructive than tornados due to _______.

A
coastal storm surges
B
their shorter duration
C
the combination of high winds and flood waters
D
all of the above
19

Sedimentation accumulation found in bodies of water can be the result of _______.

A
fertilizer runoff
B
pesticides and herbicides
C
erosion from agricultural practices
D
all of the above
20

How is renewable fuel use expected to change in the next decade?

A
It is expected to decrease.
B
It is expected to increase.
C
It is expected to fluctuate.
D
It is expected to remain the same.

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