Question 1

Forests, both natural and planted, occupy how much of the earth's land surface, other than Greenland and Antarctica?

Accepted Answer

A) 40% 
B) 20% 
C) 30% 
D) 10% 
E) 5% 
A) 40% 
B) 20% 
C) 30% 
D) 10% 
E) 5%

Question 2

Which of the following is not true about surface fires?

Accepted Answer

A) They free valuable mineral nutrients tied up in decomposing litter. 
B) They release seeds from cones of lodgepole pines. 
C) They increase soil erosion. 
D) Wildlife requires surface fires to maintain their habitats. 
E) They help control diseases. 
A) They free valuable mineral nutrients tied up in decomposing litter. 
B) They release seeds from cones of lodgepole pines. 
C) They increase soil erosion. 
D) Wildlife requires surface fires to maintain their habitats. 
E) They help control diseases.

Question 3

Wilderness designation severely restricts the use of an area.Those who can make use of wilderness are very limited because, by definition, there is no infrastructure to support its use.Mineral extractors, loggers, oil companies, and others want access to these areas to pursue their interests.Is it appropriate to open up areas that have been designated as wilderness for commercial enterprise, or should these areas be left as pristine examples of nature at work? Explain your answer.

Accepted Answer

The struggle between the goals of wilder

Question 4

Implementing reconciliation ecology will involve conservation biologists working with local communities in a practice called ____________________.

Accepted Answer

community-

Question 5

Poverty is one of the biggest causes of degradation of forests.How is that possible, and what solutions may there be?

Accepted Answer

Poverty drives people to destroy forests

Question 6

Forest fires are not a major threat to forest ecosystems as part of a natural cycle.

Accepted Answer

A) True 
 B)False

Question 7

Even though parks in developing countries have the greatest biodiversity, only about ____________________% of them are protected.

Accepted Answer

The answer of Even though parks in developing countries have...

Question 8

According to a 2007 UN Food and Agriculture Organization report, approximately 60% of the world's forests are ____________________ forests.

Accepted Answer

The answer of According to a 2007 UN Food and...

Question 9

What is the significance of addressing ecosystems rather than individual species when it comes to the issue of endangered species?

Accepted Answer

Saving a species from extinction only to

Question 10

Grass may have covered one-half of the southwestern part of the United States 200 years ago.Now it covers only about 20%.

Accepted Answer

A) True 
 B)False

Question 11

Ecologists and forest fire experts recommend several strategies for reducing fire-related harm to forests and people.Which of the following is not one of those strategies?

Accepted Answer

A) Encourage growth of young trees and underbrush. 
B) Set small, contained surface fires in highest-risk forest areas. 
C) Allow fires on public lands to burn as long as they do not threaten lives. 
D) Thin a zone of 60 meters around houses and buildings in fire prone areas. 
E) Thin forest areas vulnerable to fire by clearing away fire-prone trees and underbrush. 
A) Encourage growth of young trees and underbrush. 
B) Set small, contained surface fires in highest-risk forest areas. 
C) Allow fires on public lands to burn as long as they do not threaten lives. 
D) Thin a zone of 60 meters around houses and buildings in fire prone areas. 
E) Thin forest areas vulnerable to fire by clearing away fire-prone trees and underbrush.

Question 12

The average rate of global tropical deforestation is equivalent to _____ to _____ football fields per minute.

Accepted Answer

The answer of The average rate of global tropical deforestation...

Question 13

Forests that cover about 30% of the U.S.land area provide habitats for ____________________% of the country's wildlife species.

Accepted Answer

The answer of Forests that cover about 30% of the...

Question 14

The Smokey Bear educational campaign has decreased the likelihood of destructive crown fires.

Accepted Answer

A) True 
 B)False

Question 15

Degradation of a tropical forest usually begins when a(n) ____________________ is cut deep into the forest.

Accepted Answer

The answer of Degradation of a tropical forest usually begins...

Question 16

Which of the following statements is false?

Accepted Answer

A) Wildlife and mature trees are relatively unharmed by surface fires. 
B) Surface fires increase the chance of a severe crown fire. 
C) Surface fires release minerals that are locked up in vegetation. 
D) Surface fires may benefit some plant species and some game animals. 
E) Surface fires burn away flammable ground material, helping prevent destructive fires. 
A) Wildlife and mature trees are relatively unharmed by surface fires. 
B) Surface fires increase the chance of a severe crown fire. 
C) Surface fires release minerals that are locked up in vegetation. 
D) Surface fires may benefit some plant species and some game animals. 
E) Surface fires burn away flammable ground material, helping prevent destructive fires.

Question 17

Natural grassland ecosystems, before settlers moved in, were maintained by periodic ____________________.

Accepted Answer

The answer of Natural grassland ecosystems, before settlers moved in,...

Question 18

Crown fires are strictly the result of droughts.

Accepted Answer

A) True 
 B)False

Question 19

Forests covering approximately 30% of the U.S.land area supply about two-thirds of the nation's surface water.

Accepted Answer

A) True 
 B)False

Question 20

Deforestation is proceeding at a rate of 0.3 to 0.8% per year, which is not a pace that is a concern to scientists.

Accepted Answer

A) True 
 B)False

Exam 10: Sustaining Terrestrial Biodiversity: the Ecosystem Approach

Forests, both natural and planted, occupy how much of the earth's land surface, other than Greenland and Antarctica?

Which of the following is not true about surface fires?

Implementing reconciliation ecology will involve conservation biologists working with local communities in a practice called ____________________.

Poverty is one of the biggest causes of degradation of forests.How is that possible, and what solutions may there be?

Forest fires are not a major threat to forest ecosystems as part of a natural cycle.

Even though parks in developing countries have the greatest biodiversity, only about ____________________% of them are protected.

According to a 2007 UN Food and Agriculture Organization report, approximately 60% of the world's forests are ____________________ forests.

What is the significance of addressing ecosystems rather than individual species when it comes to the issue of endangered species?

Grass may have covered one-half of the southwestern part of the United States 200 years ago.Now it covers only about 20%.

Ecologists and forest fire experts recommend several strategies for reducing fire-related harm to forests and people.Which of the following is not one of those strategies?

The average rate of global tropical deforestation is equivalent to _____ to _____ football fields per minute.

Forests that cover about 30% of the U.S.land area provide habitats for ____________________% of the country's wildlife species.

The Smokey Bear educational campaign has decreased the likelihood of destructive crown fires.

Degradation of a tropical forest usually begins when a(n) ____________________ is cut deep into the forest.

Which of the following statements is false?

Natural grassland ecosystems, before settlers moved in, were maintained by periodic ____________________.

Crown fires are strictly the result of droughts.

Forests covering approximately 30% of the U.S.land area supply about two-thirds of the nation's surface water.

Deforestation is proceeding at a rate of 0.3 to 0.8% per year, which is not a pace that is a concern to scientists.

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 Biodiversity: the Species 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

Filters

The average rate of global tropical deforestation is equivalent to _ to _ football fields per minute.