Question 1

Long-lived synthetic organic molecules that bioaccumulate in organisms are referred to as ________.

Accepted Answer

persistent organic pollutants (POPs)
persistent organic pollutants
POPs

Question 2

Some northern species have shifted their habitats farther north in response to global warming.However,it is difficult for Arctic species to shift their habitats in response to rising temperatures because

Accepted Answer

A)  they are not as mobile as other species. 
B)  they have broader habitat tolerances. 
C)  they are more susceptible to UV radiation. 
D)  their habitat is shrinking. 
A)  they are not as mobile as other species. 
B)  they have broader habitat tolerances. 
C)  they are more susceptible to UV radiation. 
D)  their habitat is shrinking. D

Question 3

Scientists can predict all the effects that increased atmospheric carbon dioxide will have on the biosphere.

Accepted Answer

A) True 
 B)False  False

Question 4

The release of chlorofluorocarbons (CFCs)into the atmosphere has caused a(n)

Accepted Answer

A)  increase in the amount of usable nitrogen. 
B)  decrease in the amount of ultraviolet light reaching Earth. 
C)  increase in acid rainfall. 
D)  decrease in Earth's ozone layer. 
A)  increase in the amount of usable nitrogen. 
B)  decrease in the amount of ultraviolet light reaching Earth. 
C)  increase in acid rainfall. 
D)  decrease in Earth's ozone layer.

Question 5

Humans now use approximately 30-35 percent of the terrestrial net primary productivity (NPP).One result of this increased human control of NPP is that

Accepted Answer

A)  human hunger has been virtually eliminated. 
B)  the number of species on Earth has increased. 
C)  humans are often in direct competition with other species for food and other natural resources. 
D)  we have learned how to manage Earth's resources so that all species have the resources they need to survive. 
A)  human hunger has been virtually eliminated. 
B)  the number of species on Earth has increased. 
C)  humans are often in direct competition with other species for food and other natural resources. 
D)  we have learned how to manage Earth's resources so that all species have the resources they need to survive.

Question 6

Because wetlands have relatively little economic value,the percentage of the United States that is covered by wetlands has been relatively stable during the past 200 years.

Accepted Answer

A) True 
 B)False

Question 7

Using more "green" building materials,recycling more waste,using bicycles more,and reducing the use of fossil fuels are examples of ways that we can work toward ________.

Accepted Answer

The answer of Using more "green" building materials,recycling more waste,using...

Question 8

Global levels of atmospheric carbon dioxide have risen dramatically during the past 200 years.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following cycles appears to make the greatest contribution to climate change?

Accepted Answer

A)  the phosphorus cycle 
B)  the carbon cycle 
C)  the sulfur cycle 
D)  the nitrogen cycle 
A)  the phosphorus cycle 
B)  the carbon cycle 
C)  the sulfur cycle 
D)  the nitrogen cycle

Question 10

The atmospheric concentration of carbon dioxide is now approaching levels equal to those estimated to have existed 420,000 years ago.

Accepted Answer

A) True 
 B)False

Question 11

Scientists predict that current increases in atmospheric carbon dioxide concentrations will cause temperatures on Earth to rise,a phenomenon known as ________.

Accepted Answer

The answer of Scientists predict that current increases in atmospheric...

Question 12

Some chemicals and heavy metals bioaccumulate readily because they are

Accepted Answer

A)  rare in the environments,so organisms collect them efficiently. 
B)  very concentrated in the abiotic environment. 
C)  stored in the body because they have nutritional value. 
D)  collected in the body more rapidly than they are removed. 
A)  rare in the environments,so organisms collect them efficiently. 
B)  very concentrated in the abiotic environment. 
C)  stored in the body because they have nutritional value. 
D)  collected in the body more rapidly than they are removed.

Question 13

Which of the following factors does NOT contribute to the bush encroachment in Africa that is causing thorny plants to blind cheetahs?

Accepted Answer

A)  The acidified soil selects for the growth of thorny plants. 
B)  Trees and shrubs are outcompeting the grasses of the grasslands. 
C)  Atmospheric carbon dioxide levels are rising. 
D)  Trees that grow faster are more likely to survive fires. 
A)  The acidified soil selects for the growth of thorny plants. 
B)  Trees and shrubs are outcompeting the grasses of the grasslands. 
C)  Atmospheric carbon dioxide levels are rising. 
D)  Trees that grow faster are more likely to survive fires.

Question 14

The highest concentrations of environmental pollutants are typically found in the predators at the top of the food chain.

Accepted Answer

A) True 
 B)False

Question 15

The only way POPs affect the biosphere is through bioaccumulation.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following statements describes a major difference between human-caused global change and global change that occurs naturally?

Accepted Answer

A)  Human-caused global change occurs more quickly,leaving organisms less time to adapt. 
B)  Human-caused global changes are smaller in scale than naturally caused changes. 
C)  Naturally caused global change occurs at only one place on Earth at a time. 
D)  Naturally caused global changes are limited to the terrestrial habitats where humans live. 
A)  Human-caused global change occurs more quickly,leaving organisms less time to adapt. 
B)  Human-caused global changes are smaller in scale than naturally caused changes. 
C)  Naturally caused global change occurs at only one place on Earth at a time. 
D)  Naturally caused global changes are limited to the terrestrial habitats where humans live.

Question 17

About 50 percent of the human population lives near ________ ecosystems.

Accepted Answer

The answer of About 50 percent of the human population...

Question 18

A human-made chemical bioaccumulates if it is easily absorbed by an organism and then quickly broken down and excreted by the organism.

Accepted Answer

A) True 
 B)False

Question 19

Having a sustainable impact on the Earth and our biosphere means that we must

Accepted Answer

A)  produce more fertilizers to feed a growing population. 
B)  take advantage of global warming by growing more crops in areas that were previously unavailable for agriculture. 
C)  find ways to recycle carbon dioxide more rapidly. 
D)  create better balances between our consumption of resources and the rates at which they can be replenished. 
A)  produce more fertilizers to feed a growing population. 
B)  take advantage of global warming by growing more crops in areas that were previously unavailable for agriculture. 
C)  find ways to recycle carbon dioxide more rapidly. 
D)  create better balances between our consumption of resources and the rates at which they can be replenished.

Question 20

Climate change has not started and it can be prevented with timely action.

Accepted Answer

A) True 
 B)False

Exam 25: Global Change

Long-lived synthetic organic molecules that bioaccumulate in organisms are referred to as ________.

Some northern species have shifted their habitats farther north in response to global warming.However,it is difficult for Arctic species to shift their habitats in response to rising temperatures because

Scientists can predict all the effects that increased atmospheric carbon dioxide will have on the biosphere.

The release of chlorofluorocarbons (CFCs)into the atmosphere has caused a(n)

Humans now use approximately 30-35 percent of the terrestrial net primary productivity (NPP).One result of this increased human control of NPP is that

Because wetlands have relatively little economic value,the percentage of the United States that is covered by wetlands has been relatively stable during the past 200 years.

Using more "green" building materials,recycling more waste,using bicycles more,and reducing the use of fossil fuels are examples of ways that we can work toward ________.

Global levels of atmospheric carbon dioxide have risen dramatically during the past 200 years.

Which of the following cycles appears to make the greatest contribution to climate change?

The atmospheric concentration of carbon dioxide is now approaching levels equal to those estimated to have existed 420,000 years ago.

Scientists predict that current increases in atmospheric carbon dioxide concentrations will cause temperatures on Earth to rise,a phenomenon known as ________.

Some chemicals and heavy metals bioaccumulate readily because they are

Which of the following factors does NOT contribute to the bush encroachment in Africa that is causing thorny plants to blind cheetahs?

The highest concentrations of environmental pollutants are typically found in the predators at the top of the food chain.

The only way POPs affect the biosphere is through bioaccumulation.

Which of the following statements describes a major difference between human-caused global change and global change that occurs naturally?

About 50 percent of the human population lives near ________ ecosystems.

A human-made chemical bioaccumulates if it is easily absorbed by an organism and then quickly broken down and excreted by the organism.

Having a sustainable impact on the Earth and our biosphere means that we must

Climate change has not started and it can be prevented with timely action.

The Nature of Science and the Characteristics of Life

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Cancer and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

DNA and Genes

From Gene to Protein

DNA Technology

How Evolution Works

The Origin of Species

The Evolution of Biodiversity

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Biosphere

Growth of Populations

Animal Behavior

Ecological Communities

Ecosystems

Internal Organization and Homeostasis

Nutrition and Digestion

Circulation and Gas Exchange

Animal Hormones

Nervous and Sensory Systems

Skeletons,Muscles,and Movement

The Immune System

Reproduction and Development

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

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