AnswersSC332 Environmental Science BSuccess Stories

Success Stories — Cumulative exam Answers

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1
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After the energy crisis of the 1970’s and the OPEC oil embargo, the US _______.

A
increased its dependency on foreign oil
B
began to wean itself off of foreign oil and the economic vulnerability it brings
C
changed over to all renewable energy sources
D
began building new nuclear power plants to replace fossil fuel use
2
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Why do many fishermen support efforts to protect and restore mangrove forests?

A
Most fishermen are environmentalists.
B
Many fish breed in mangrove forests.
C
They lay their nets in mangrove forests.
D
Mangrove forests provide valuable hardwoods.
3

Sustainability can be achieved through careful resource management.

A
T
B
F
4

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.
5

The use of biotechnology in agriculture is generally more harmful than beneficial.

A
T
B
F
6

There are risks associated with drinking potable water.

A
T
B
F
7

Which of the following is a way that climate affects soil formation?

A
increased precipitation
B
warmer temperatures
C
increased winds
D
all of the above
8

Which of the following best explains why the Inuit principally relied on hunting for survival?

A
Tundra never thaws sufficiently for crops to grow.
B
Prey animals are more scarce in tundra regions.
C
The Inuit traditionally live near the coast.
D
None of the above
9

Soil generation and soil conservation are equally effective agricultural strategies.

A
T
B
F
10

Which of the following will not contribute to resource conservation?

A
using solar power
B
recycling glass
C
using nuclear power
D
using biofuels
11

Which of the following energy sources is expected to have the highest rate of consumption in 2030?

A
coal
B
natural gas
C
nuclear
D
renewable energy
12

Which of the following best explains the importance of studying the ocean carbon cycle?

A
The oceans have a significant impact on the levels of atmospheric gases.
B
It is a new field of ocean science.
C
The ocean releases one quarter of the carbon dioxide in the atmosphere.
D
All of the above
13

Coral reefs are a vast community of individual organisms.

A
T
B
F
14

Bottom trawling is considered destructive because _______.

A
it destroys sea floor habitats
B
it depletes fish populations
C
it shatters deep-sea coral
D
all of the above
15

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
16

It is best to say that restoring and protecting estuaries and wetlands _______.

A
helps prevent pollution in coastal waterways
B
results in higher juvenile fish mortality
C
improves the health of coastal ecosystems
D
has no impact on fish populations
17

Why has the spread of the herbicide-resistant hydrilla through Florida’s waterways resulted in them no longer being navigable by most boats?

A
Thy hydrilla has induced a drought that drained the waterways.
B
The weed clogs propellers that boats use for propulsion.
C
The sticky leaves of the weed hold boats in place.
D
All of the above
18

What is an advantage to alternative energy technology?

A
Using alternative energy technology increases the demand for fossil fuels.
B
Most alternative energy technologies use nonrenewable resources.
C
Alternative energy technology can reduce the environmental impact of burning fossil fuels.
D
There is no advantage to using an alternative energy technology.
19

Decomposition in pools, ponds, and lakes takes place mostly in the _______ zone.

A
pelagic
B
littoral
C
benthic
D
all of the above
20

Fossil fuels are an important natural resource used by society. Which of the following best describes fossil fuels?

A
They are any liquid fuel derived from once-living matter.
B
They are organic fuels derived from ancient plants and animals.
C
They are fuels in which dinosaur fossils are commonly found.
D
They are naturally occurring inorganic fuels like coal and petroleum.

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