Question 1

​Birds contaminated with ____________________ have been unable to successfully reproduce because of excessively fragile eggshells.

Accepted Answer

DDT insect

Question 2

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 3

Argentina fire ants have developed a genetic resistance to pesticides.​

Accepted Answer

A) True 
 B)False

Question 4

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 5

​There are an estimated 50,000 to 60,000 orangutans in the wild that are ____ at a rate of 1,000 to 2,000 per year.

Accepted Answer

A)  ​becoming threatened 
B)  ​becoming endangered 
C)  increasing speciation 
D)  ​raising ecotourism dollars 
E)  ​disappearing 
A)  ​becoming threatened 
B)  ​becoming endangered 
C)  increasing speciation 
D)  ​raising ecotourism dollars 
E)  ​disappearing

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

Recent genetic research indicates that ____ or more individuals are needed for an endangered species to maintain its capacity for biological evolution.​

Accepted Answer

A)  ​10 
B)  ​100 
C)  ​1,000 
D)  ​10,000 
E)  ​100,000 
A)  ​10 
B)  ​100 
C)  ​1,000 
D)  ​10,000 
E)  ​100,000

Question 8

One of the causes of extinction is human population growth.​

Accepted Answer

A) True 
 B)False

Question 9

Explain the concept of a national park; in particular,discuss how a national park can be a habitat island.

Accepted Answer

A national park is typically a protected

Question 10

Egg pulling refers to ____.​

Accepted Answer

A)  ​techniques used to extend the breeding span of captured birds 
B)  ​collecting eggs from the wild and hatching them in zoos or research centers 
C)  ​using fertility drugs to increase productivity 
D)  ​production of hybrids in captive breeding programs 
E)  ​collecting unfertilized eggs from ovaries of wild animals 
A)  ​techniques used to extend the breeding span of captured birds 
B)  ​collecting eggs from the wild and hatching them in zoos or research centers 
C)  ​using fertility drugs to increase productivity 
D)  ​production of hybrids in captive breeding programs 
E)  ​collecting unfertilized eggs from ovaries of wild animals

Question 11

Describe the three primary challenges for scientists when attempting to estimate extinction rates.

Accepted Answer

​Natural extinction take a long times an

Question 12

The primary reason polar bear population are declining is because their fur keeps their body temperature too warm in light of global warming trends.​

Accepted Answer

A) True 
 B)False

Question 13

The butchering and eating of some forms of bushmeat has helped to spread diseases such as HIV/AIDS and the Ebola virus.​

Accepted Answer

A) True 
 B)False

Question 14

Various plant species provide value as food crops,fuelwood,lumber,and paper from trees,and useful scientific knowledge.What term best describes this type of value?

Accepted Answer

A)  ​natural benefits 
B)  ​ecotourist value 
C)  ​ecologic provisions 
D)  ​economic services 
E)  ​bioprospecting 
A)  ​natural benefits 
B)  ​ecotourist value 
C)  ​ecologic provisions 
D)  ​economic services 
E)  ​bioprospecting

Question 15

​The current rate of extinction is ____ compared to the rate that existed before humans arrived on the earth.

Accepted Answer

A)  ​about the same 
B)  ​slightly less 
C)  ​up to 1,000 times higher 
D)  ​almost 1,000 times lower 
E)  ​fluctuating wildly 
A)  ​about the same 
B)  ​slightly less 
C)  ​up to 1,000 times higher 
D)  ​almost 1,000 times lower 
E)  ​fluctuating wildly

Question 16

​What is the best way to reduce threats from invasive species?

Accepted Answer

A)  ​eradication 
B)  prevention​ 
C)  ​pesticides 
D)  ​genetic engineering 
E)  ​technology and science 
A)  ​eradication 
B)  prevention​ 
C)  ​pesticides 
D)  ​genetic engineering 
E)  ​technology and science

Question 17

-Refer to the accompanying table.A traveling biologist decides to contribute money to the two developing countries that seems to be most focused on their threatened bird species,based on the percentage of land area that is set aside for conservation.What two countries will be recipients of her donations?

Accepted Answer

Costa Rica and Cambo

Question 18

​The species-area relationship suggests that if 90% of a coral reef is lost,then ____.

Accepted Answer

A)  ​90% of the species utilizing the reef will go extinct 
B)  ​100% of the species will go extinct 
C)  ​50% of the species will go extinct 
D)  ​speciation of invasive animals will increase 
E)  ​the habitat will forever become fragmented 
A)  ​90% of the species utilizing the reef will go extinct 
B)  ​100% of the species will go extinct 
C)  ​50% of the species will go extinct 
D)  ​speciation of invasive animals will increase 
E)  ​the habitat will forever become fragmented

Question 19

Biologists conservatively estimate that the current extinction rate is at least ____________________ times the normal background extinction rate.​

Accepted Answer

The answer of Biologists conservatively estimate that the current extinction...

Birds contaminated with ____________________ have been unable to successfully reproduce because of excessively fragile eggshells.

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

Argentina fire ants have developed a genetic resistance to pesticides.

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

There are an estimated 50,000 to 60,000 orangutans in the wild that are ____ at a rate of 1,000 to 2,000 per year.

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

Recent genetic research indicates that ____ or more individuals are needed for an endangered species to maintain its capacity for biological evolution.

One of the causes of extinction is human population growth.

Explain the concept of a national park; in particular,discuss how a national park can be a habitat island.

Egg pulling refers to ____.

Describe the three primary challenges for scientists when attempting to estimate extinction rates.

The primary reason polar bear population are declining is because their fur keeps their body temperature too warm in light of global warming trends.

The butchering and eating of some forms of bushmeat has helped to spread diseases such as HIV/AIDS and the Ebola virus.

Various plant species provide value as food crops,fuelwood,lumber,and paper from trees,and useful scientific knowledge.What term best describes this type of value?

The current rate of extinction is ____ compared to the rate that existed before humans arrived on the earth.

What is the best way to reduce threats from invasive species?

The species-area relationship suggests that if 90% of a coral reef is lost,then ____.

Biologists conservatively estimate that the current extinction rate is at least ____________________ times the normal background extinction rate.

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

​Birds contaminated with ____________________ have been unable to successfully reproduce because of excessively fragile eggshells.

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

Argentina fire ants have developed a genetic resistance to pesticides.​

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

​There are an estimated 50,000 to 60,000 orangutans in the wild that are ____ at a rate of 1,000 to 2,000 per year.

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

Recent genetic research indicates that ____ or more individuals are needed for an endangered species to maintain its capacity for biological evolution.​

One of the causes of extinction is human population growth.​

Explain the concept of a national park; in particular,discuss how a national park can be a habitat island.

Egg pulling refers to ____.​

Describe the three primary challenges for scientists when attempting to estimate extinction rates.

The primary reason polar bear population are declining is because their fur keeps their body temperature too warm in light of global warming trends.​

The butchering and eating of some forms of bushmeat has helped to spread diseases such as HIV/AIDS and the Ebola virus.​

Various plant species provide value as food crops,fuelwood,lumber,and paper from trees,and useful scientific knowledge.What term best describes this type of value?

​The current rate of extinction is ____ compared to the rate that existed before humans arrived on the earth.

​What is the best way to reduce threats from invasive species?

​The species-area relationship suggests that if 90% of a coral reef is lost,then ____.

Biologists conservatively estimate that the current extinction rate is at least ____________________ times the normal background extinction rate.​

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

Birds contaminated with ____________________ have been unable to successfully reproduce because of excessively fragile eggshells.

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

Argentina fire ants have developed a genetic resistance to pesticides.

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

There are an estimated 50,000 to 60,000 orangutans in the wild that are ____ at a rate of 1,000 to 2,000 per year.

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

Recent genetic research indicates that ____ or more individuals are needed for an endangered species to maintain its capacity for biological evolution.

One of the causes of extinction is human population growth.

Egg pulling refers to ____.

The primary reason polar bear population are declining is because their fur keeps their body temperature too warm in light of global warming trends.

The butchering and eating of some forms of bushmeat has helped to spread diseases such as HIV/AIDS and the Ebola virus.

The current rate of extinction is ____ compared to the rate that existed before humans arrived on the earth.

What is the best way to reduce threats from invasive species?

The species-area relationship suggests that if 90% of a coral reef is lost,then ____.

Biologists conservatively estimate that the current extinction rate is at least ____________________ times the normal background extinction rate.