Question 1

Because birds live in every climate and biome,and because they are easy to track and count,they serve as excellent ____.

Accepted Answer

A)  keystone species 
B)  scapegoats 
C)  indicator species 
D)  aesthetic indicators 
E)  habitat determiners 
A)  keystone species 
B)  scapegoats 
C)  indicator species 
D)  aesthetic indicators 
E)  habitat determiners

Question 2

The active ingredients in nine of the ten leading prescription drugs originally came from wild organisms.

Accepted Answer

A) True 
 B)False

Question 3

Explain,in your own words,why the degradation and loss of honeybee colonies are seen as an important example of biodiversity loss.

Accepted Answer

Honeybees are major pollinators of flowe

Question 4

The biggest problem with invasive species is that in the new location,they ____.

Accepted Answer

A)  are always bigger than native species 
B)  have no population controls such as predators 
C)  are always stronger than native species 
D)  have higher reproductive rates than native species 
E)  evolve more quickly than native species 
A)  are always bigger than native species 
B)  have no population controls such as predators 
C)  are always stronger than native species 
D)  have higher reproductive rates than native species 
E)  evolve more quickly than native species

Question 5

The estimate of the background extinction rate is thought to be too low.Which explanation for why the estimate may be low is false?

Accepted Answer

A)  The rate is likely to increase sharply in the next 50-100 years. 
B)  Current and projected extinction rates in biodiversity hotspots are higher than the global average. 
C)  Tropical forests,coral reefs,and wetlands are being fragmented and degraded. 
D)  Long-term species recovery is threatened by available areas such as tropical forest,coral reefs,and wetlands. 
E)  The growing human population is using fewer resources per person. 
A)  The rate is likely to increase sharply in the next 50-100 years. 
B)  Current and projected extinction rates in biodiversity hotspots are higher than the global average. 
C)  Tropical forests,coral reefs,and wetlands are being fragmented and degraded. 
D)  Long-term species recovery is threatened by available areas such as tropical forest,coral reefs,and wetlands. 
E)  The growing human population is using fewer resources per person.

Question 6

HIPPCO is a(n)____.

Accepted Answer

A)  species of hippopotamus 
B)  company specializing in solving environmental problems 
C)  government program 
D)  acronym summarizing causes of extinction 
E)  environmental rock band 
A)  species of hippopotamus 
B)  company specializing in solving environmental problems 
C)  government program 
D)  acronym summarizing causes of extinction 
E)  environmental rock band

Question 7

According to researchers,the greatest threat to wild species is ____.

Accepted Answer

A)  habitat destruction 
B)  invasive species 
C)  population and resource use growth 
D)  pollution 
E)  climate change 
A)  habitat destruction 
B)  invasive species 
C)  population and resource use growth 
D)  pollution 
E)  climate change

Question 8

Continuing decline of pollinator populations,such as honeybees,could cause a serious disruption of food production for humans.

Accepted Answer

A) True 
 B)False

Question 9

Organized crime has moved into illegal wildlife smuggling because of the huge profits involved.

Accepted Answer

A) True 
 B)False

Question 10

The key role of a honeybee is to ____ plants and flowers.

Accepted Answer

A)  pollinate 
B)  populate 
C)  produce 
D)  protect 
E)  preserve 
A)  pollinate 
B)  populate 
C)  produce 
D)  protect 
E)  preserve

Question 11

There are many actions an individual can do take to help protect endangered and threatened species.Which of the following is least likely to be effective?

Accepted Answer

A)  Do not purchase products made from endangered or threatened species. 
B)  Do not purchase animals taken from the wild. 
C)  Do not purchase plants taken from the wild. 
D)  Spread the word about the importance of this issue. 
E)  All of these are important actions to take. 
A)  Do not purchase products made from endangered or threatened species. 
B)  Do not purchase animals taken from the wild. 
C)  Do not purchase plants taken from the wild. 
D)  Spread the word about the importance of this issue. 
E)  All of these are important actions to take.

Question 12

What species was intentionally introduced into the United States?

Accepted Answer

A)  kudzu 
B)  gypsy moth 
C)  zebra mussel 
D)  brown tree snake 
E)  common pigeon 
A)  kudzu 
B)  gypsy moth 
C)  zebra mussel 
D)  brown tree snake 
E)  common pigeon

Question 13

CITES is a(n)____.

Accepted Answer

A)  regulations controlling the introduction of exotic species 
B)  treaty controlling the international trade in endangered species 
C)  pact that supports critical ecosystems that support wildlife 
D)  international organization dedicated to the preservation of endangered species 
E)  policing agency for the protection of threatened species 
A)  regulations controlling the introduction of exotic species 
B)  treaty controlling the international trade in endangered species 
C)  pact that supports critical ecosystems that support wildlife 
D)  international organization dedicated to the preservation of endangered species 
E)  policing agency for the protection of threatened species

Question 14

One reason why we should work to prevent human activities from causing the extinction of other species is that they are a vital part of the earth's ____________________ system.

Accepted Answer

The answer of One reason why we should work to...

Question 15

____________________ occurs when the population of a species becomes so low that the species can no longer perform a role in its ecosystem.

Accepted Answer

Functional extinctio

Question 16

Throughout the 3.5 billion year history of life on the earth,there has been a natural,low rate of species extinction know as ____.

Accepted Answer

A)  mass extinction 
B)  secondary extinction 
C)  biological extinction 
D)  background extinction rate 
E)  tertiary extinction 
A)  mass extinction 
B)  secondary extinction 
C)  biological extinction 
D)  background extinction rate 
E)  tertiary extinction

Question 17

Which effect below is not a result of global warming?

Accepted Answer

A)  The warming atmosphere is occurring twice as fast in the Arctic. 
B)  The polar bear's hunting season is getting longer. 
C)  Arctic ice is melting more rapidly. 
D)  The amount of floating sea ice in the Arctic during the summer is decreasing. 
E)  Floating sea ice is breaking up earlier each year. 
A)  The warming atmosphere is occurring twice as fast in the Arctic. 
B)  The polar bear's hunting season is getting longer. 
C)  Arctic ice is melting more rapidly. 
D)  The amount of floating sea ice in the Arctic during the summer is decreasing. 
E)  Floating sea ice is breaking up earlier each year.

Question 18

If estimates of an extinction rate 10,000 times greater than the background rate are correct,then what percentage of all species will be extinct by the end of this century?

Accepted Answer

A)  5 - 10% 
B)  10 - 25% 
C)  25 - 33% 
D)  25 - 50% 
E)  60 - 75% 
A)  5 - 10% 
B)  10 - 25% 
C)  25 - 33% 
D)  25 - 50% 
E)  60 - 75%

Question 19

Worldwide,approximately 2,500 species are listed as endangered or threatened.

Accepted Answer

A) True 
 B)False

Question 20

The rate at which extinctions occurred prior to the evolution of modern humans is called the ____.

Accepted Answer

A)  E.O.Wilson postulate 
B)  species diversity index 
C)  living planet index 
D)  baseline extinction rate 
E)  background extinction rate 
A)  E.O.Wilson postulate 
B)  species diversity index 
C)  living planet index 
D)  baseline extinction rate 
E)  background extinction rate

Exam 9: Sustaining Biodiversity: The Species Approach

Because birds live in every climate and biome,and because they are easy to track and count,they serve as excellent ____.

The active ingredients in nine of the ten leading prescription drugs originally came from wild organisms.

Explain,in your own words,why the degradation and loss of honeybee colonies are seen as an important example of biodiversity loss.

The biggest problem with invasive species is that in the new location,they ____.

The estimate of the background extinction rate is thought to be too low.Which explanation for why the estimate may be low is false?

HIPPCO is a(n)____.

According to researchers,the greatest threat to wild species is ____.

Continuing decline of pollinator populations,such as honeybees,could cause a serious disruption of food production for humans.

Organized crime has moved into illegal wildlife smuggling because of the huge profits involved.

The key role of a honeybee is to ____ plants and flowers.

There are many actions an individual can do take to help protect endangered and threatened species.Which of the following is least likely to be effective?

What species was intentionally introduced into the United States?

CITES is a(n)____.

One reason why we should work to prevent human activities from causing the extinction of other species is that they are a vital part of the earth's ____________________ system.

____________________ occurs when the population of a species becomes so low that the species can no longer perform a role in its ecosystem.

Throughout the 3.5 billion year history of life on the earth,there has been a natural,low rate of species extinction know as ____.

Which effect below is not a result of global warming?

If estimates of an extinction rate 10,000 times greater than the background rate are correct,then what percentage of all species will be extinct by the end of this century?

Worldwide,approximately 2,500 species are listed as endangered or threatened.

The rate at which extinctions occurred prior to the evolution of modern humans is called the ____.

Environmental Problems, their Causes, and Sustainability

Science, matter, energy, and Systems

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

Biodiversity, species Interactions, and Population Control

The Human Population and Its Impact

Climate and Biodiversity

Aquatic Biodiversity

Sustaining Terrestrial Biodiversity: The Ecosystem Approach

Sustaining Aquatic Biodiversity

Food, soil, and Pest Management

Water Resources

Geology and Nonrenewable Mineral Resources

Nonrenewable Energy

Energy Efficiency and Renewable Energy

Environmental Hazards and Human Health

Air Pollution

Climate Disruption and Ozone Depletion

Water Pollution

Solid and Hazardous Waste

Cities and Sustainability

Economics, environment, and Sustainability

Politics, environment, and Sustainability

Environmental Worldviews, ethics, and Sustainability

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