AnswersOK-Environmental Science-Sem B -CA- 36431BCumulative Exam

Cumulative Exam — Cumulative exam Answers

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1
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What important function do stream pools serve?

A
Stream pools serve as a habitat for juvenile fish.
B
Stream pools serve as a habitat for organisms that have difficulty in feeding or navigating swifter areas of the stream.
C
They have greater depth and lower velocity than other parts of the stream, thus allowing a habitat for organisms during dryer seasons.
D
All of the above
2
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Which of the following are important products of rainforests?

A
timber
B
pharmaceuticals
C
oxygen
D
all of the above
3

It is important for _______ to participate in conservation efforts.

A
government
B
business
C
citizens
D
all of the above
4

Why are cane toads in Australia considered an invasive species rather than simply nonnative?

A
They are destructive to native species and have no natural predators.
B
They reproduce more quickly than native species.
C
They have venom glands.
D
Large adult specimens are able to hunt snakes.
5

Which of the following practices that are needed to run a nuclear power plant has a negative impact on both air and water?

A
cooling of the power plant
B
mining of uranium
C
storage of radioactive waste
D
monitoring the reactor
6

Which of the following is a difficulty associated with environmental protection?

A
cost
B
unpredictability
C
sustainability
D
all of the above
7

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
8

Deforestation has no direct impact on reptile species.

A
T
B
F
9

Which of the following is not a negative consequence of upward urban growth?

A
pollution
B
creation of a “heat island”
C
increased use of surrounding land
D
waste management issues
10

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
11

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
12

How is the world population projected to change in the next few decades?

A
It is projected to level off.
B
It is projected to decrease steadily.
C
It is projected to increase steadily.
D
It is projected to double within 5 years.
13

Which of the following is not released by trees into the atmosphere?

A
oxygen
B
water vapor
C
ozone
D
none of the above
14

What is an advantage of using nuclear power?

A
Nuclear power is generated at a lower cost than traditional methods.
B
Nuclear power produces less pollution than traditional methods.
C
Nuclear power is more efficient than traditional methods.
D
All of the above
15

Which of the following statements about mining is true?

A
Mining has no long-term effects on the Earth.
B
Mining is unimportant to the economy.
C
Mining has no ecological impact.
D
Mining allows useful minerals to be extracted from the Earth.
16

How can resource conservation benefit the environment?

A
Resource conservation can help preserve natural habitats.
B
Resource conservation can reduce water pollution.
C
Resource conservation can reduce air pollution.
D
All of the above
17

Reclamation restores an environment affected by mining to a state where it can sustain its ecosystem.

A
T
B
F
18

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.
19

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
20

Which of the following best explains why marine debris is not caused solely by countries bordering the ocean?

A
Marine debris mostly originates from oceangoing ships.
B
Debris is carried to the ocean by winds, rivers, and storms.
C
Marine debris originates from natural sources.
D
None of the above

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