Question 1

Alien species thrive in new ecosystems because they have long generation times.

Accepted Answer

A) True 
 B)False

Question 2

In a biomagnification situation, assume that a dangerous chemical, called "X"is present in the water of a small bay at a concentration of .00005 parts per million (ppm). Also assume there are three layers of consumption between the water and a certain predatory bird that lives around the lake, and at each step of consumption, chemical X gets magnified 1000 times. What is the final concentration of chemical X in the predatory bird after eating 100 fish in a week?

Accepted Answer

A)  At the end of one week, the bird will have 50 ppm of chemical X 
B)  At the end of one week, the bird will have 5 ppm of chemical X 
C)  At the end of one week, the bird will have 100 ppm of chemical X 
D)  At the end of one week, the bird will have 1,000 atoms of chemical X 
E)  At the end of one week, the bird will have 10 ppm of chemical X 
A)  At the end of one week, the bird will have 50 ppm of chemical X 
B)  At the end of one week, the bird will have 5 ppm of chemical X 
C)  At the end of one week, the bird will have 100 ppm of chemical X 
D)  At the end of one week, the bird will have 1,000 atoms of chemical X 
E)  At the end of one week, the bird will have 10 ppm of chemical X

Question 3

Living just off the coast of California, a rare dolphin is listed as an endangered species. What agency or group was responsible for studying the status of this animal, and subsequently listing it as endangered?

Accepted Answer

A)  The animal would have been studied by the National Marine Fisheries Service, but would have to be listed as endangered by the U.S. Fish and Wildlife Service. 
B)  Because of its location in ocean waters, it would have been listed by CITES. 
C)  The National Marine Fisheries Service would list it. 
D)  The Convention on Biological Diversity would list it. 
E)  The U.S. Fish and Wildlife Service would study and list it. 
A)  The animal would have been studied by the National Marine Fisheries Service, but would have to be listed as endangered by the U.S. Fish and Wildlife Service. 
B)  Because of its location in ocean waters, it would have been listed by CITES. 
C)  The National Marine Fisheries Service would list it. 
D)  The Convention on Biological Diversity would list it. 
E)  The U.S. Fish and Wildlife Service would study and list it.

Question 4

MATCHING
For the list of animals, select the characteristic that would most likely contribute to its possible premature extinction.
-bald eagle

Accepted Answer

A) low reproductive rate 
B) specialized niche 
C) narrow distribution 
D) feeds at a high trophic level 
E) rare
F)fixed migratory pattern
G)commercially valuable
H)large territory 
A) low reproductive rate 
B) specialized niche 
C) narrow distribution 
D) feeds at a high trophic level 
E) rare
F)fixed migratory pattern
G)commercially valuable
H)large territory

Question 5

MATCHING
For the list of animals, select the characteristic that would most likely contribute to its possible premature extinction.
-elephant seal

Accepted Answer

A) low reproductive rate 
B) specialized niche 
C) narrow distribution 
D) feeds at a high trophic level 
E) rare
F)fixed migratory pattern
G)commercially valuable
H)large territory 
A) low reproductive rate 
B) specialized niche 
C) narrow distribution 
D) feeds at a high trophic level 
E) rare
F)fixed migratory pattern
G)commercially valuable
H)large territory

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

The common sense thought of "better safe than sorry" when applied to preventing species extinction is called the____________________.

Accepted Answer

precaution

Question 8

A biologist is most likely to say that the passenger pigeon is

Accepted Answer

A)  Endangered 
B)  locally extinct 
C)  ecologically extinct 
D)  biologically extinct 
E)  Threatened 
A)  Endangered 
B)  locally extinct 
C)  ecologically extinct 
D)  biologically extinct 
E)  Threatened

Question 9

The two groups with the largest percentage of endangered species are the ____________ and the _____________.

Accepted Answer

plants, fi

Question 10

____________________ is the best way to reduce threats from invasive species.

Accepted Answer

The answer of ____________________ is the best way to reduce...

Question 11

The greatest eliminator of species is habitat destruction of

Accepted Answer

A)  coral reefs 
B)  Grasslands 
C)  tropical forests 
D)  Deserts 
E)  temperate forests 
A)  coral reefs 
B)  Grasslands 
C)  tropical forests 
D)  Deserts 
E)  temperate forests

Question 12

The most important threat to survival of polar bears at this time is

Accepted Answer

A)  ocean currents delivering pollutants to the Arctic Ocean from oceans in more temperate climate zones 
B)  hunting by native populations 
C)  tourism disruptions 
D)  warming of the frozen Arctic, which has has caused the winter ice pack to shrink and break up earlier, thus limiting hunting opportunities for the bears 
E)  a normal population cycle that will result in their slow extinction 
A)  ocean currents delivering pollutants to the Arctic Ocean from oceans in more temperate climate zones 
B)  hunting by native populations 
C)  tourism disruptions 
D)  warming of the frozen Arctic, which has has caused the winter ice pack to shrink and break up earlier, thus limiting hunting opportunities for the bears 
E)  a normal population cycle that will result in their slow extinction

Question 13

One of the causes of depletion of the environment is human population growth.

Accepted Answer

A) True 
 B)False

Question 14

_____ have estimated that up to 25% of the world's current animal and plant species could be gone by 2050, and 50% could be gone by the end of the century.

Accepted Answer

A)  Edward O. Wilson and Stuart Pimm 
B)  Philip Levin and Donald Levin 
C)  Norman Myers and Aldo Leopold 
D)  Donald Levin and Stuart Pimm 
E)  Gas and oil company executives 
A)  Edward O. Wilson and Stuart Pimm 
B)  Philip Levin and Donald Levin 
C)  Norman Myers and Aldo Leopold 
D)  Donald Levin and Stuart Pimm 
E)  Gas and oil company executives

Question 15

Which of the following is not a factor in habitat fragmentation

Accepted Answer

A)  barriers that limit the ability of species to find food and mates 
B)  blockage of migration routes 
C)  the vulnerability of small populations 
D)  barriers such as roads that limit the ability of some species to disperse and colonize new areas 
E)  conservation efforts by Pilai Poonswad 
A)  barriers that limit the ability of species to find food and mates 
B)  blockage of migration routes 
C)  the vulnerability of small populations 
D)  barriers such as roads that limit the ability of some species to disperse and colonize new areas 
E)  conservation efforts by Pilai Poonswad

Question 16

The International Whaling Commission moratorium on commercial whaling was imposed in 1986. Following this:

Accepted Answer

A)  Worldwide commercial whaling was completely eliminated. 
B)  There was no change in the number of whales killed outside U.S. waters. 
C)  Whale killing declined, and only 1,400 whales were killed in 2008, compared to over 42,000 in 1970. 
D)  Even Japan stopped commercial whaling. 
E)  Commercial whaling actually increased in some areas outside the U.S. 
A)  Worldwide commercial whaling was completely eliminated. 
B)  There was no change in the number of whales killed outside U.S. waters. 
C)  Whale killing declined, and only 1,400 whales were killed in 2008, compared to over 42,000 in 1970. 
D)  Even Japan stopped commercial whaling. 
E)  Commercial whaling actually increased in some areas outside the U.S.

Question 17

The United States currently has about ____________________ invasive species that were accidentally or deliberately introduced.

Accepted Answer

The answer of The United States currently has about ____________________...

Question 18

Geologic records indicate that the earth has experienced perhaps ________mass extinction(s) where up to ______________percent of the species disappeared.

Accepted Answer

A)  1, 50 
B)  5, 95 
C)  1, 95 
D)  3, 75 
E)  3, 50 
A)  1, 50 
B)  5, 95 
C)  1, 95 
D)  3, 75 
E)  3, 50

Question 19

Select the human activity or program that has proven to be the most effective for protecting each of the listed species:
-peregrine falcon

Accepted Answer

A) international regulatory laws 
B) U.S. regulatory laws 
C) wildlife refuges 
D) botanical gardens 
E) captive breeding programs 
A) international regulatory laws 
B) U.S. regulatory laws 
C) wildlife refuges 
D) botanical gardens 
E) captive breeding programs

Question 20

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)  It is not caused by any human activities that scientists can determine. 
C)  Only land birds are affected, while water birds seem to be maintaining normal population numbers. 
D)  Birds are excellent environmental indicators. 
E)  Birdwatching 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)  It is not caused by any human activities that scientists can determine. 
C)  Only land birds are affected, while water birds seem to be maintaining normal population numbers. 
D)  Birds are excellent environmental indicators. 
E)  Birdwatching now generates a significant portion of tourist dollars in some countries.

Alien species thrive in new ecosystems because they have long generation times.

Living just off the coast of California, a rare dolphin is listed as an endangered species. What agency or group was responsible for studying the status of this animal, and subsequently listing it as endangered?

MATCHING For the list of animals, select the characteristic that would most likely contribute to its possible premature extinction. -bald eagle

MATCHING For the list of animals, select the characteristic that would most likely contribute to its possible premature extinction. -elephant seal

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

The common sense thought of "better safe than sorry" when applied to preventing species extinction is called the____________________.

A biologist is most likely to say that the passenger pigeon is

The two groups with the largest percentage of endangered species are the and the _.

____________________ is the best way to reduce threats from invasive species.

The greatest eliminator of species is habitat destruction of

The most important threat to survival of polar bears at this time is

One of the causes of depletion of the environment is human population growth.

_____ have estimated that up to 25% of the world's current animal and plant species could be gone by 2050, and 50% could be gone by the end of the century.

Which of the following is not a factor in habitat fragmentation

The International Whaling Commission moratorium on commercial whaling was imposed in 1986. Following this:

The United States currently has about ____________________ invasive species that were accidentally or deliberately introduced.

Geologic records indicate that the earth has experienced perhaps mass extinction(s) where up to ______percent of the species disappeared.

Select the human activity or program that has proven to be the most effective for protecting each of the listed species: -peregrine falcon

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

Environmental Problems, Their Causes, and Sustainability

Science, Matter, and Energy

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

Biodiversity, Species Interactions, and Population Control

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity: the Ecosystem Approach

Food, Soil, and Pest Management

Water Resources and Water Pollution

Geology and Nonrenewable Minerals

Energy

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: the Species Approach

Alien species thrive in new ecosystems because they have long generation times.

Living just off the coast of California, a rare dolphin is listed as an endangered species. What agency or group was responsible for studying the status of this animal, and subsequently listing it as endangered?

MATCHING For the list of animals, select the characteristic that would most likely contribute to its possible premature extinction. -bald eagle

MATCHING For the list of animals, select the characteristic that would most likely contribute to its possible premature extinction. -elephant seal

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

The common sense thought of "better safe than sorry" when applied to preventing species extinction is called the____________________.

A biologist is most likely to say that the passenger pigeon is

The two groups with the largest percentage of endangered species are the ____________ and the _____________.

____________________ is the best way to reduce threats from invasive species.

The greatest eliminator of species is habitat destruction of

The most important threat to survival of polar bears at this time is

One of the causes of depletion of the environment is human population growth.

_____ have estimated that up to 25% of the world's current animal and plant species could be gone by 2050, and 50% could be gone by the end of the century.

Which of the following is not a factor in habitat fragmentation

The International Whaling Commission moratorium on commercial whaling was imposed in 1986. Following this:

The United States currently has about ____________________ invasive species that were accidentally or deliberately introduced.

Geologic records indicate that the earth has experienced perhaps ________mass extinction(s) where up to ______________percent of the species disappeared.

Select the human activity or program that has proven to be the most effective for protecting each of the listed species: -peregrine falcon

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

Environmental Problems, Their Causes, and Sustainability

Science, Matter, and Energy

Ecosystems: What Are They and How Do They Work

Biodiversity and Evolution

Biodiversity, Species Interactions, and Population Control

The Human Population and Urbanization

Climate and Biodiversity

Sustaining Biodiversity: the Ecosystem Approach

Food, Soil, and Pest Management

Water Resources and Water Pollution

Geology and Nonrenewable Minerals

Energy

Environmental Hazards and Human Health

Air Pollution, Climate Change, and Ozone Depletion

Solid and Hazardous Waste

Environmental Economics, Politics, and Worldviews

Filters

The two groups with the largest percentage of endangered species are the and the _.

Geologic records indicate that the earth has experienced perhaps mass extinction(s) where up to ______percent of the species disappeared.