Question 1

Biologists believe the Endangered Species Act has been successful, but critics say it is a failure. Which argument below supports the critics?

Accepted Answer

A) The ESA has not been in existence long enough for endangered species to recover. 
B) Species are only listed when critically endangered; therefore, many will be lost. 
C) More than one-half of listed species are stable or improving, and 99% are still alive. 
D) The budget for protecting endangered species amounted to 9 cents per U.S. citizen. 
E) Federal regulators have been heavy handed in enforcing the act. 
A) The ESA has not been in existence long enough for endangered species to recover. 
B) Species are only listed when critically endangered; therefore, many will be lost. 
C) More than one-half of listed species are stable or improving, and 99% are still alive. 
D) The budget for protecting endangered species amounted to 9 cents per U.S. citizen. 
E) Federal regulators have been heavy handed in enforcing the act.

Question 2

After a mass extinction, the earth's overall biodiversity eventually returns to equal or higher levels.

Accepted Answer

A) True 
 B)False

Question 3

Four of the following are characteristics that make some species especially vulnerable to ecological and biological extinction. One of the following is not such a characteristic. Which one is it?

Accepted Answer

A) low reproductive rates 
B) small territories 
C) feeds at high trophic level 
D) narrow distribution 
E) rare 
A) low reproductive rates 
B) small territories 
C) feeds at high trophic level 
D) narrow distribution 
E) rare

Question 4

What are some of the hypotheses for the collapse of honeybee colonies?

Accepted Answer

1. A parasitic mite that kills adults.

Question 5

When a large, contiguous area of habitat is reduced in area and divided into smaller, more scattered patches, the process is called ____.

Accepted Answer

A) habitat elimination 
B) habitat exploitation 
C) resource partitioning 
D) habitat fragmentation 
E) resource loss 
A) habitat elimination 
B) habitat exploitation 
C) resource partitioning 
D) habitat fragmentation 
E) resource loss

Question 6

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 7

When the Endangered Species Act was established in 1973, the list included 92 U.S. species. In 2010, that number had risen to ____.

Accepted Answer

A) 356 
B) 507 
C) 770 
D) 1,000 
E) 1,394 
A) 356 
B) 507 
C) 770 
D) 1,000 
E) 1,394

Question 8

Biodiversity experts estimate that during this century, the extinction rate due to human activities will rise to ____ times the background extinction rate.

Accepted Answer

A) 3 
B) 10 
C) 20 
D) 100 
E) 10,000 
A) 3 
B) 10 
C) 20 
D) 100 
E) 10,000

Question 9

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 10

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 11

It is easier to remove an invasive species than it is to control its introduction.

Accepted Answer

A) True 
 B)False

Question 12

What group of animals receives the most protection by the use of wildlife refuges?

Accepted Answer

A) small mammals 
B) migratory waterfowl 
C) large mammals 
D) songbirds 
E) reptiles 
A) small mammals 
B) migratory waterfowl 
C) large mammals 
D) songbirds 
E) reptiles

Question 13

A(n)____________________ species has so few individual survivors that the species could soon become extinct over all or most of its natural range.

Accepted Answer

The answer of A(n)____________________ species has so few individual survivors...

Question 14

Four of the following have resulted in an increase in hunting bushmeat; one has not. Which one is not a cause of this increase?

Accepted Answer

A) rapidly growing human population 
B) trying to make a living supplying restaurants with exotic meat 
C) spread of AIDS 
D) overfishing of ocean fish 
E) accessibility to remote areas 
A) rapidly growing human population 
B) trying to make a living supplying restaurants with exotic meat 
C) spread of AIDS 
D) overfishing of ocean fish 
E) accessibility to remote areas

Question 15

Biologists think there are four major reasons why we should work to prevent human activities from causing the extinction of other species. Which of the following is not one of these reasons?

Accepted Answer

A) Species are part of the earth's life support system. 
B) Most species contribute to services that support our economies. 
C) It will take from 5 million to 10 million years to rebuild the biodiversity. 
D) We need animals, especially rare animals, for zoos. 
E) Each species has a right to exist even if it isn't useful to us. 
A) Species are part of the earth's life support system. 
B) Most species contribute to services that support our economies. 
C) It will take from 5 million to 10 million years to rebuild the biodiversity. 
D) We need animals, especially rare animals, for zoos. 
E) Each species has a right to exist even if it isn't useful to us.

Question 16

Which invasive species threatens the Florida Everglades?

Accepted Answer

A) kudzu 
B) pythons 
C) zebra mussels 
D) nutrias 
E) sea lampreys 
A) kudzu 
B) pythons 
C) zebra mussels 
D) nutrias 
E) sea lampreys

Question 17

The passenger pigeon, perhaps the must abundant bird on the earth in 1813, was extinct less than one hundred years later because of human activities.

Accepted Answer

A) True 
 B)False

Question 18

In the state of Hawaii, 95% of endangered species are endangered because of invasive species.

Accepted Answer

A) True 
 B)False

Question 19

The best way to limit the impact of invasive species is to ____.

Accepted Answer

A) use pesticides to reduce their numbers 
B) import and release their natural predators 
C) prevent them from being introduced in the first place 
D) hire lots of people and destroy them 
E) alter their genes so they all die 
A) use pesticides to reduce their numbers 
B) import and release their natural predators 
C) prevent them from being introduced in the first place 
D) hire lots of people and destroy them 
E) alter their genes so they all die

Question 20

Distinguish between regional and functional extinction.

Accepted Answer

In regional extinction, a species disapp

Biologists believe the Endangered Species Act has been successful, but critics say it is a failure. Which argument below supports the critics?

After a mass extinction, the earth's overall biodiversity eventually returns to equal or higher levels.

Four of the following are characteristics that make some species especially vulnerable to ecological and biological extinction. One of the following is not such a characteristic. Which one is it?

What are some of the hypotheses for the collapse of honeybee colonies?

When a large, contiguous area of habitat is reduced in area and divided into smaller, more scattered patches, the process is called ____.

Which effect below is not a result of global warming?

When the Endangered Species Act was established in 1973, the list included 92 U.S. species. In 2010, that number had risen to ____.

Biodiversity experts estimate that during this century, the extinction rate due to human activities will rise to ____ times the background extinction rate.

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

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

It is easier to remove an invasive species than it is to control its introduction.

What group of animals receives the most protection by the use of wildlife refuges?

A(n)____________________ species has so few individual survivors that the species could soon become extinct over all or most of its natural range.

Four of the following have resulted in an increase in hunting bushmeat; one has not. Which one is not a cause of this increase?

Biologists think there are four major reasons why we should work to prevent human activities from causing the extinction of other species. Which of the following is not one of these reasons?

Which invasive species threatens the Florida Everglades?

The passenger pigeon, perhaps the must abundant bird on the earth in 1813, was extinct less than one hundred years later because of human activities.

In the state of Hawaii, 95% of endangered species are endangered because of invasive species.

The best way to limit the impact of invasive species is to ____.

Distinguish between regional and functional extinction.

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

Filters

Exam 9: Sustaining Biodiversity: The Species Approach

Biologists believe the Endangered Species Act has been successful, but critics say it is a failure. Which argument below supports the critics?

After a mass extinction, the earth's overall biodiversity eventually returns to equal or higher levels.

Four of the following are characteristics that make some species especially vulnerable to ecological and biological extinction. One of the following is not such a characteristic. Which one is it?

What are some of the hypotheses for the collapse of honeybee colonies?

When a large, contiguous area of habitat is reduced in area and divided into smaller, more scattered patches, the process is called ____.

Which effect below is not a result of global warming?

When the Endangered Species Act was established in 1973, the list included 92 U.S. species. In 2010, that number had risen to ____.

Biodiversity experts estimate that during this century, the extinction rate due to human activities will rise to ____ times the background extinction rate.

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

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

It is easier to remove an invasive species than it is to control its introduction.

What group of animals receives the most protection by the use of wildlife refuges?

A(n)____________________ species has so few individual survivors that the species could soon become extinct over all or most of its natural range.

Four of the following have resulted in an increase in hunting bushmeat; one has not. Which one is not a cause of this increase?

Biologists think there are four major reasons why we should work to prevent human activities from causing the extinction of other species. Which of the following is not one of these reasons?

Which invasive species threatens the Florida Everglades?

The passenger pigeon, perhaps the must abundant bird on the earth in 1813, was extinct less than one hundred years later because of human activities.

In the state of Hawaii, 95% of endangered species are endangered because of invasive species.

The best way to limit the impact of invasive species is to ____.

Distinguish between regional and functional extinction.

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

Filters