Question 1

Hydropower can have an affect on

Accepted Answer

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

Question 2

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

Question 3

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

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. 
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.

Question 5

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. 
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.

Question 6

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 industry 
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 industry

Question 7

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. 
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.

Question 8

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. 
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.

Question 9

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

Question 10

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. 
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.

Question 11

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

Question 12

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 vapor 
A)  carbon dioxide 
B)  oxides of nitrogen 
C)  oxides of sulfur 
D)  chlorofluorocarbons 
E)  water vapor

Question 13

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

Question 14

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

Question 15

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

Question 16

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

Question 17

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. 
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.

Question 18

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. 
A)  logistic growth. 
B)  exponential growth. 
C)  linear growth. 
D)  ascending growth. 
E)  capacity growth.

Question 19

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 five 
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 five

Question 20

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. 
A)  eats away at marble. 
B)  corrodes metals. 
C)  causes various human diseases. 
D)  damages crops. 
E)  aid in resource development.

Exam 25: Human Impacts on the Biosphere

Hydropower can have an affect on

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

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

The primary cause of desertification in the world today is

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

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

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

Each substance contributes to acid rain EXCEPT

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

The growth rate

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.

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

Which is NOT a result or effect of irrigation?

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

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

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

Fossil fuels

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

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

Air pollution does all of the following EXCEPT

Learning About Human Biology

Chemistry of Life

Cells and How They Work

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

DNA, Genes, and Biotechnology

Genes and Disease: Cancer

Principles of Evolution

Principles of Ecology

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