Question 1

Fossil fuels

Accepted Answer

A)   are renewable natural resources.
B)   may be commercially depleted within this century.
C)   can be utilized without any environmental degradation.
D)   are essentially pure carbon deposits.
E)   are a renewable resource.F) A) and E)
G) D) and E)

Question 2

In itself, a flood that washes away an entire population of rabbits is

Accepted Answer

A)   a density-dependent factor.
B)   a limiting factor dependent on the individuals.
C)   a consequence of exponential growth.
D)   density-independent.
E)   a result of natural selection.F) A) and E)
G) C) and D)

Question 3

Selecting the Exception Four of the five answers listed below are sources of air pollution. Select the exception.

Accepted Answer

A)   carbon dioxide
B)   oxides of nitrogen
C)   oxides of sulfur
D)   chlorofluorocarbons
E)   water vaporF) B) and E)
G) A) and D)

Question 4

The primary cause of desertification in the world today is

Accepted Answer

A)   increased salinity resulting from irrigation practices.
B)   overgrazing of marginal lands.
C)   clearing and degradation of tropical forests.
D)   herbicide and fertilizer runoff.
E)   use of water for industry.F) None of the above
G) A) and B)

Question 5

A growth pattern where a low-density population grows slowly, goes through a rapid growth phase and then levels off when the carrying capacity is reached is called

Accepted Answer

A)   logistic growth.
B)   exponential growth.
C)   linear growth.
D)   ascending growth.
E)   capacity growth.F) A) and D)
G) None of the above

Question 6

Selecting the Exception Four of the five answers below are limits to achieving a population's full biotic potential. Select the exception.

Accepted Answer

A)   lack of nutrients
B)   predation
C)   exponential growth
D)   competition for space
E)   waste buildupF) B) and C)
G) D) and E)

Question 7

Each substance contributes to acid rain EXCEPT

Accepted Answer

A)   the ozone.
B)   waste products from the burning of coal.
C)   nitrogen fertilizers.
D)   waste products from the burning of gasoline.
E)   motor vehicles.F) A) and B)
G) A) and E)

Question 8

How many humans do not have enough clean water to meet basic needs?

Accepted Answer

A)   five out of every ten
B)   eight out of every ten
C)   three out of every four
D)   one out of every ten
E)   two out of every fiveF) C) and D)
G) A) and C)

Question 9

Which is NOT a result or effect of irrigation?

Accepted Answer

A)   increased food production
B)   saltwater intrusion into water supplies
C)   lowered water tables
D)   uplifted land
E)   salinizationF) B) and E)
G) B) and D)

Question 10

Which of these is a density-dependent factor that controls the size of a population?

Accepted Answer

A)   wind velocity
B)   light intensity
C)   nutrient supply
D)   rainfall
E)   wave action in an intertidal zoneF) C) and D)
G) B) and E)

Question 11

Which insecticide has been outlawed in the United States but not in Latin America?

Accepted Answer

A)   DDT
B)   pyrethrum
C)   inorganic phosphates
D)   biological insecticides
E)   sulfur-containing insecticidesF) B) and E)
G) A) and E)

Question 12

Which factor is NOT characteristic of a city primarily plagued by industrial smog?

Accepted Answer

A)   high concentration of sulfur oxides
B)   fossil fuels used for manufacturing
C)   cold, wet winters
D)   high concentration of nitrogen oxides
E)   large factories of heavy industryF) C) and D)
G) B) and D)

Question 13

Each factor appears to be correlated with a decrease in atmospheric ozone ("ozone holes")  EXCEPT

Accepted Answer

A)   more serious sunburns.
B)   loss of ocean phytoplankton.
C)   increased incidence of skin cancers.
D)   decreased levels of atmospheric carbon dioxide.
E)   increased occurrences of cataracts.F) A) and D)
G) None of the above

Question 14

The atmosphere above which region is known to have a hole in the ozone layer?

Accepted Answer

A)   Antarctica
B)   eastern North America
C)   northern Europe
D)   the western Pacific
E)   central AsiaF) B) and E)
G) A) and B)

Question 15

The growth rate

Accepted Answer

A)   does not vary from one species to another.
B)   is controlled best through non-biological mechanisms.
C)   is controlled by the frequency of assisted reproduction.
D)   is controlled by the number of offspring produced.
E)   does not vary as a result of density-dependent controls.F) A) and B)
G) A) and C)

Question 16

Which fungicide will account for 15 percent of ozone thinning in future years unless its production is stopped?

Accepted Answer

A)   amphotericin B
B)   nystatin
C)   methyl bromide
D)   dicarboximide
E)   ethylmercury bromideF) B) and D)
G) A) and B)

Question 17

For every million liters of water in the world, only about ____ liters are in a form that can be used for human consumption or agriculture.

Accepted Answer

A)   0.6
B)   6
C)   60
D)   600
E)   6,000F) C) and D)
G) B) and D)

Question 18

The total resources a population consumes and the resulting wastes that are returned to the environment are referred to as a(n)

Accepted Answer

A)   point source.
B)   nonpoint source.
C)   ecological footprint.
D)   ecocycle.
E)   biocycle.F) A) and B)
G) C) and D)

Question 19

Air pollution does all of the following EXCEPT

Accepted Answer

A)   eats away at marble.
B)   corrodes metals.
C)   causes various human diseases.
D)   damages crops.
E)   aid in resource development.F) None of the above
G) A) and E)

Question 20

Hydropower can have an affect on

Accepted Answer

A)   water pollution.
B)   soil erosion.
C)   deforestation.
D)   river and ocean life.
E)   mineral leaching.F) A) and C)
G) A) and B)

Exam 25: Human Impacts on the Biosphere

The atmosphere above which region is known to have a hole in the ozone layer?

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Which factor is NOT characteristic of a city primarily plagued by industrial smog?

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Air pollution does all of the following EXCEPT

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The primary cause of desertification in the world today is

Correct AnswerverifiedShow Answer

Selecting the Exception Four of the five answers listed below are sources of air pollution. Select the exception.

Correct AnswerverifiedShow Answer

The total resources a population consumes and the resulting wastes that are returned to the environment are referred to as a(n)

Correct AnswerverifiedShow Answer

Each factor appears to be correlated with a decrease in atmospheric ozone ("ozone holes") EXCEPT

Correct AnswerverifiedShow Answer

For every million liters of water in the world, only about ____ liters are in a form that can be used for human consumption or agriculture.

Correct AnswerverifiedShow Answer

Which of these is a density-dependent factor that controls the size of a population?

Correct AnswerverifiedShow Answer

Fossil fuels

Correct AnswerverifiedShow Answer

Which is NOT a result or effect of irrigation?

Correct AnswerverifiedShow Answer

How many humans do not have enough clean water to meet basic needs?

Correct AnswerverifiedShow Answer

A growth pattern where a low-density population grows slowly, goes through a rapid growth phase and then levels off when the carrying capacity is reached is called

Correct AnswerverifiedShow Answer

The growth rate

Correct AnswerverifiedShow Answer

Which fungicide will account for 15 percent of ozone thinning in future years unless its production is stopped?

Correct AnswerverifiedShow Answer

Selecting the Exception Four of the five answers below are limits to achieving a population's full biotic potential. Select the exception.

Correct AnswerverifiedShow Answer

Each substance contributes to acid rain EXCEPT

Correct AnswerverifiedShow Answer

In itself, a flood that washes away an entire population of rabbits is

Correct AnswerverifiedShow Answer

Hydropower can have an affect on

Correct AnswerverifiedShow Answer

Which insecticide has been outlawed in the United States but not in Latin America?

Correct AnswerverifiedShow Answer

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