Question 1

The decline in approximately 70% of the world's bird species is particularly alarming to scientists because ____ .

Accepted Answer

A)  this is the first time any bird species have been threatened with declining numbers 
B)  the cause is a non-human activity that scientists cannot determine 
C)  only land birds are affected, while water birds seem to be maintaining normal population numbers 
D)  birds are excellent environmental indicators 
E)  bird watching now generates a significant portion of tourist dollars in some countries 
A)  this is the first time any bird species have been threatened with declining numbers 
B)  the cause is a non-human activity that scientists cannot determine 
C)  only land birds are affected, while water birds seem to be maintaining normal population numbers 
D)  birds are excellent environmental indicators 
E)  bird watching now generates a significant portion of tourist dollars in some countries

Question 2

The best method for reducing threats from invasive species is through ____________________ efforts.

Accepted Answer

The answer of The best method for reducing threats from...

Question 3

Birds are excellent ____________________ species because they respond to habitat and climate changes very quickly relative to other kinds of plants and animals.

Accepted Answer

The answer of Birds are excellent ____________________ species because they...

Question 4

The Endangered Species Act was designed to ____.

Accepted Answer

A)  catalogue and protect threatened species from extinction in the United States 
B)  identify and protect endangered species only in the United States 
C)  identify and protect endangered species in the United States and abroad 
D)  develop recovery plans for listed species more quickly 
E)  emphasize the protection of biological diversity and ecosystem functioning 
A)  catalogue and protect threatened species from extinction in the United States 
B)  identify and protect endangered species only in the United States 
C)  identify and protect endangered species in the United States and abroad 
D)  develop recovery plans for listed species more quickly 
E)  emphasize the protection of biological diversity and ecosystem functioning

Question 5

The African honeybee, also known as the killer bee, is a deliberately introduced invasive species.

Accepted Answer

A) True 
 B)False

Question 6

The greatest threat to most species is ____.

Accepted Answer

A)  loss of habitat 
B)  water pollution 
C)  parasites 
D)  sport hunting 
E)  global drought conditions 
A)  loss of habitat 
B)  water pollution 
C)  parasites 
D)  sport hunting 
E)  global drought conditions

Question 7

The United States has not signed or ratified the ____________________, a treaty that has been signed or ratified by 196 countries.

Accepted Answer

Convention

Question 8

____________________ is a process by which chemicals entering the food chain at lower levels become concentrated as they move to animals at higher trophic levels.

Accepted Answer

The answer of ____________________ is a process by which chemicals...

Question 9

What is to the best approach to preserving genetic information for endangered plant species?

Accepted Answer

A)  National laws 
B)  Protected areas 
C)  Wildlife refuges 
D)  Arboretums 
E)  Seed banks 
A)  National laws 
B)  Protected areas 
C)  Wildlife refuges 
D)  Arboretums 
E)  Seed banks

Question 10

Scientists believe that the greatest human-influenced threat to wild species is ____________________.

Accepted Answer

habitat destruction,

Question 11

What does the Convention on International Trade in Endangered Species (CITES) specifically address?

Accepted Answer

A)  It bans the poaching of all protected wild species. 
B)  It contains detailed criteria to determine whether individual species should be listed as threatened. 
C)  It bans the hunting, capturing, and selling of threatened or endangered species. 
D)  It establishes trade laws for all economically important wild species. 
E)  It legally requires governments to reduce the global rate of biodiversity loss. 
A)  It bans the poaching of all protected wild species. 
B)  It contains detailed criteria to determine whether individual species should be listed as threatened. 
C)  It bans the hunting, capturing, and selling of threatened or endangered species. 
D)  It establishes trade laws for all economically important wild species. 
E)  It legally requires governments to reduce the global rate of biodiversity loss.

Question 12

The greatest threat to species habitat is ____.

Accepted Answer

A)  climate change 
B)  pollution 
C)  tropical deforestation 
D)  desertification 
E)  invasive species 
A)  climate change 
B)  pollution 
C)  tropical deforestation 
D)  desertification 
E)  invasive species

Question 13

Biologists warn that human activities might actually increase the ____ for various weeds and pests.

Accepted Answer

A)  ecological services 
B)  habitat fragmentation 
C)  extinction rates 
D)  biodiversity 
E)  speciation rates 
A)  ecological services 
B)  habitat fragmentation 
C)  extinction rates 
D)  biodiversity 
E)  speciation rates

Question 14

There have been attempts to control kudzu, a vine that was introduced to the United States from Japan, but kudzu responds to attempts to burn it by ____________________.

Accepted Answer

The answer of There have been attempts to control kudzu,...

Question 15

The United States Endangered Species Act offers protection only for species located within United States boundaries.

Accepted Answer

A) True 
 B)False

Question 16

The ____________________ relationship explains how 90% of land habitat loss can cause 50% of the species to go extinct in a given area.

Accepted Answer

The answer of The ____________________ relationship explains how 90% of...

Question 17

There is evidence that polar bears are more frequently reported encountering humans and visiting human settlements. What is the most likely explanation for this behavior?

Accepted Answer

A)  Because conservation efforts have been so successful, polar bear populations are increasing so much that they are expanding their range. 
B)  Because they have less ice on which to hunt and have trouble finding prey, polar bears must search for food in other places. 
C)  Excessive hunting is causing polar bears to leave their normal habitat. 
D)  The seals that polar bears eat must have moved into human settlements first. 
E)  There is a decreasing polar bear population, so this must be a result of mistaken identification of other species. 
A)  Because conservation efforts have been so successful, polar bear populations are increasing so much that they are expanding their range. 
B)  Because they have less ice on which to hunt and have trouble finding prey, polar bears must search for food in other places. 
C)  Excessive hunting is causing polar bears to leave their normal habitat. 
D)  The seals that polar bears eat must have moved into human settlements first. 
E)  There is a decreasing polar bear population, so this must be a result of mistaken identification of other species.

Question 18

Figure 8.6 for questions 93 and 94. 
Refer to the accompanying figure. Which of the species currently has the largest range today?

Accepted Answer

The species with the

Question 19

What is a threat to 60% of the U.S. wildlife refuges?

Accepted Answer

A)  Ecotourism and hunting 
B)  Invasive species 
C)  Human population growth 
D)  Habitat fragmentation 
E)  Mining, oil drilling, and use of off-road vehicles 
A)  Ecotourism and hunting 
B)  Invasive species 
C)  Human population growth 
D)  Habitat fragmentation 
E)  Mining, oil drilling, and use of off-road vehicles

Question 20

The world's wild species provide ecological resources and services that keep us alive and support human economies.

Accepted Answer

A) True 
 B)False

The decline in approximately 70% of the world's bird species is particularly alarming to scientists because ____ .

The best method for reducing threats from invasive species is through ____________________ efforts.

Birds are excellent ____________________ species because they respond to habitat and climate changes very quickly relative to other kinds of plants and animals.

The Endangered Species Act was designed to ____.

The African honeybee, also known as the killer bee, is a deliberately introduced invasive species.

The greatest threat to most species is ____.

The United States has not signed or ratified the ____________________, a treaty that has been signed or ratified by 196 countries.

____________________ is a process by which chemicals entering the food chain at lower levels become concentrated as they move to animals at higher trophic levels.

What is to the best approach to preserving genetic information for endangered plant species?

Scientists believe that the greatest human-influenced threat to wild species is ____________________.

What does the Convention on International Trade in Endangered Species (CITES) specifically address?

The greatest threat to species habitat is ____.

Biologists warn that human activities might actually increase the ____ for various weeds and pests.

There have been attempts to control kudzu, a vine that was introduced to the United States from Japan, but kudzu responds to attempts to burn it by ____________________.

The United States Endangered Species Act offers protection only for species located within United States boundaries.

The ____________________ relationship explains how 90% of land habitat loss can cause 50% of the species to go extinct in a given area.

There is evidence that polar bears are more frequently reported encountering humans and visiting human settlements. What is the most likely explanation for this behavior?

Figure 8.6 for questions 93 and 94. Refer to the accompanying figure. Which of the species currently has the largest range today?

What is a threat to 60% of the U.S. wildlife refuges?

The world's wild species provide ecological resources and services that keep us alive and support human economies.

The Environment and Sustainability

Science, Matter, Energy and Systems

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

Species Interactions, Ecological Succession and Population Control

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity: Saving Ecosystems

Food Production and the Environment

Water Resources and Water Pollution

Geology and Nonrenewable Mineral Resources

Energy Resources

Environmental Hazards and Human Health

Air Pollution, Climate Change and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics, Politics and Worldviews

Filters

Exam 8: Sustaining Biodiversity: Saving Species

The decline in approximately 70% of the world's bird species is particularly alarming to scientists because ____ .

The best method for reducing threats from invasive species is through ____________________ efforts.

Birds are excellent ____________________ species because they respond to habitat and climate changes very quickly relative to other kinds of plants and animals.

The Endangered Species Act was designed to ____.

The African honeybee, also known as the killer bee, is a deliberately introduced invasive species.

The greatest threat to most species is ____.

The United States has not signed or ratified the ____________________, a treaty that has been signed or ratified by 196 countries.

____________________ is a process by which chemicals entering the food chain at lower levels become concentrated as they move to animals at higher trophic levels.

What is to the best approach to preserving genetic information for endangered plant species?

Scientists believe that the greatest human-influenced threat to wild species is ____________________.

What does the Convention on International Trade in Endangered Species (CITES) specifically address?

The greatest threat to species habitat is ____.

Biologists warn that human activities might actually increase the ____ for various weeds and pests.

There have been attempts to control kudzu, a vine that was introduced to the United States from Japan, but kudzu responds to attempts to burn it by ____________________.

The United States Endangered Species Act offers protection only for species located within United States boundaries.

The ____________________ relationship explains how 90% of land habitat loss can cause 50% of the species to go extinct in a given area.

There is evidence that polar bears are more frequently reported encountering humans and visiting human settlements. What is the most likely explanation for this behavior?

Figure 8.6 for questions 93 and 94. Refer to the accompanying figure. Which of the species currently has the largest range today?

What is a threat to 60% of the U.S. wildlife refuges?

The world's wild species provide ecological resources and services that keep us alive and support human economies.

The Environment and Sustainability

Science, Matter, Energy and Systems

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

Species Interactions, Ecological Succession and Population Control

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity: Saving Ecosystems

Food Production and the Environment

Water Resources and Water Pollution

Geology and Nonrenewable Mineral Resources

Energy Resources

Environmental Hazards and Human Health

Air Pollution, Climate Change and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics, Politics and Worldviews

Filters