Question 1

DDT can ____________________ by moving up the food chain and accumulating in the fat tissues of animals at high levels.

Accepted Answer

bioaccumul

Question 2

The amount of money spent on the Endangered Species Act for a year is less than the cost of 2 thirty-second TV commercials on the Super Bowl.

Accepted Answer

A) True 
 B)False

Question 3

Island species - often found nowhere else - are especially vulnerable to extinctions when their habitat is destroyed.

Accepted Answer

A) True 
 B)False

Question 4

The U.S.____________________ has the responsibility for identifying and listing endangered and threatened species other than ocean species.

Accepted Answer

Fish and W

Question 5

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 6

The best way to limit the impact of invasive species is to do which of the following?

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 7

Global warming has resulting in all of the following changes except

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 8

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...

Question 9

What percentage of the world's known plant species have been examined for medicinal properties?

Accepted Answer

A) 33% 
B) 25% 
C) 10% 
D) 5% 
E) 0.5% 
A) 33% 
B) 25% 
C) 10% 
D) 5% 
E) 0.5%

Question 10

Consider the Case Study: Polar Bears and Global Warming.What do you think will be the result of removing the top predator from an ecosystem as vast as the Arctic? Be as specific as possible.

Accepted Answer

Removal of a top predator releases the p

Question 11

The group of animals receiving the most protection by the use of wildlife refuges are

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 12

With the projected extinction rates, and without greatly expanded conservation efforts, it will likely take 200,000 human generations for biodiversity to return to current levels.

Accepted Answer

A) True 
 B)False

Question 13

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 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 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 14

Economic considerations can not be taken into account in any decision concerning endangered or threatened species under the Endangered Species Act of 1973.

Accepted Answer

A) True 
 B)False

Question 15

Approximately 70% of bird species are declining in numbers as a result of human activities.

Accepted Answer

A) True 
 B)False

Question 16

Increasing populations of the American bald eagle, because of conservation efforts, have led to dangerously low populations of the rare Great Cormorant off the coast of Maine.

Accepted Answer

A) True 
 B)False

Question 17

In protecting species from premature extinction, and in protecting their vital habitats, we are helping sustain our own health and well-being.

Accepted Answer

A) True 
 B)False

Question 18

The greatest new threat to bird populations is

Accepted Answer

A) global warming 
B) loss of wetlands 
C) hunting and poaching 
D) pollution 
E) tall buildings 
A) global warming 
B) loss of wetlands 
C) hunting and poaching 
D) pollution 
E) tall buildings

Question 19

If estimates of an extinction rate of 1% per year are correct, what percentage of all species will be extinct by the end of this century?

Accepted Answer

A) 10% 
B) 25% 
C) 33% 
D) 50% 
E) 66% 
A) 10% 
B) 25% 
C) 33% 
D) 50% 
E) 66%

Question 20

DDT use in the 1950s and 1960s was nearly responsible for the extinction of what familiar bird species?

Accepted Answer

A) red-tailed hawk 
B) common pigeon 
C) chicken 
D) bald eagle 
E) cardinal 
A) red-tailed hawk 
B) common pigeon 
C) chicken 
D) bald eagle 
E) cardinal

Exam 9: Sustaining Biodiversity: the Species Approach

DDT can ____________________ by moving up the food chain and accumulating in the fat tissues of animals at high levels.

The amount of money spent on the Endangered Species Act for a year is less than the cost of 2 thirty-second TV commercials on the Super Bowl.

Island species - often found nowhere else - are especially vulnerable to extinctions when their habitat is destroyed.

The U.S.____________________ has the responsibility for identifying and listing endangered and threatened species other than ocean species.

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

The best way to limit the impact of invasive species is to do which of the following?

Global warming has resulting in all of the following changes except

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

What percentage of the world's known plant species have been examined for medicinal properties?

Consider the Case Study: Polar Bears and Global Warming.What do you think will be the result of removing the top predator from an ecosystem as vast as the Arctic? Be as specific as possible.

The group of animals receiving the most protection by the use of wildlife refuges are

With the projected extinction rates, and without greatly expanded conservation efforts, it will likely take 200,000 human generations for biodiversity to return to current levels.

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?

Economic considerations can not be taken into account in any decision concerning endangered or threatened species under the Endangered Species Act of 1973.

Approximately 70% of bird species are declining in numbers as a result of human activities.

Increasing populations of the American bald eagle, because of conservation efforts, have led to dangerously low populations of the rare Great Cormorant off the coast of Maine.

In protecting species from premature extinction, and in protecting their vital habitats, we are helping sustain our own health and well-being.

The greatest new threat to bird populations is

If estimates of an extinction rate of 1% per year are correct, what percentage of all species will be extinct by the end of this century?

DDT use in the 1950s and 1960s was nearly responsible for the extinction of what familiar bird species?

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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