Answers26.3611055 ECSD Environmental Science FICUnit Test

Unit Test — Unit test Answers

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41
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Driving cars lowers the pH of the oceans by _______.

A
releasing CO2 that dissolves and forms acid in the oceans
B
releasing pollutants that lead to smog
C
releasing CO that dissolves and forms acid in the oceans
D
releasing pollutants that lead to acid rain
42
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Air pollution affects everyone equally.

A
T
B
F
43

Which of the following human activities would be expected to be the biggest contributor to air pollution?

A
driving
B
restaurant garbage
C
aerosol cans
D
nuclear weapons
44

The _______ is responsible for absorbing the most UV radiation.

A
troposphere
B
stratosphere
C
mesosphere
D
thermosphere
45

Ozone is both helpful and harmful to life on Earth.

A
T
B
F
46

Ecosystems have trouble adjusting to short-term changes.

A
T
B
F
47

Acid rain occurs when sulfur dioxide in the atmosphere is oxidized in the presence of nitrogen dioxide. Acid rain is an example of _______.

A
a primary pollutant
B
a secondary pollutant
C
a tertiary pollutant
D
none of the above
48

Alternative energy sources like solar and wind power _______.

A
are always available
B
are only replenished with human intervention
C
are renewable
D
are more versatile than fossil fuels
49

Which of the following is not a technological way of improving air quality?

A
using electrostatic precipitators
B
installing solar panels
C
composting
D
building wind turbines
50

Which of the following is not true concerning the Pleistocene ice age?

A
Earth began warming out of the ice age 18,000 years ago.
B
Glaciers stopped advancing 15,000 years ago.
C
Sea levels during the ice age were higher than today.
D
Forests and grasslands became more common after the ice age.
51

Without the greenhouse effect the Earth would be _______ than it is today.

A
warmer
B
drier
C
colder
D
wetter
52

Which of the following is not a possible cause for air pollution?

A
volcanoes
B
industry
C
combustion
D
none of the above
53

Which of the following is a health risk associated with ground-level ozone?

A
cataracts
B
skin cancer
C
respiratory illness
D
all of the above
54

Ecosystems change when _______.

A
living components of an ecosystem change
B
nonliving components of an ecosystem change
C
their stability is disrupted
D
all of the above
55

Over 95% of incoming UV-B radiation is absorbed in the stratosphere. Please select the best answer from the choices provided

A
T
B
F
56

Landfill waste results in air pollution as _______.

A
garbage decomposes and releases methane
B
radon trapped in garbage is released
C
paint and hairspray cans break down
D
vandals set fire to flammable waste
57

Global warming is a theory accepted by a majority of scientists.

A
T
B
F
58

Which of the following is not a manmade cause of global warming?

A
burning fossil fuels
B
deforestation
C
respiration
D
population growth
59

How can carbon dioxide be considered a pollutant when it is a natural component of air?

A
Carbon dioxide is considered a pollutant even though it is a natural component of air, because it is harmful to all living organisms.
B
Carbon dioxide is considered a pollutant when larger concentrations than normal are present in the air as a result of human activity.
C
Carbon dioxide is considered a pollutant, because it forms harmful chemicals when mixed with other pollutants in the air.
D
Carbon dioxide cannot be considered a pollutant under any circumstances.
60

Which scenario best describes how climate trends might affect animal migration?

A
Animals found in the Arctic may move south.
B
Animals found at the equator may move north.
C
Animals found in higher elevations will move to lower elevations.
D
Animals found in lower elevations will stay in the same location.

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