Question 1

What is an ecological footprint,and what unit is used to express one's ecological footprint?

Accepted Answer

An ecological footprint is a measurement

Question 2

Which term encompasses all the others?

Accepted Answer

A)  climate change 
B)  global warming 
C)  greenhouse effect 
D)  weather patterns 
A)  climate change 
B)  global warming 
C)  greenhouse effect 
D)  weather patterns

Question 3

The levels of carbon dioxide in the atmosphere

Accepted Answer

A)  peaked around 1950 and have begun slowly decreasing since then. 
B)  are high but not higher than the highest estimated levels in the last 420,000 years. 
C)  are estimated to be higher than at any time in the past 420,000 years. 
D)  began decreasing when the burning of fossil fuels increased. 
A)  peaked around 1950 and have begun slowly decreasing since then. 
B)  are high but not higher than the highest estimated levels in the last 420,000 years. 
C)  are estimated to be higher than at any time in the past 420,000 years. 
D)  began decreasing when the burning of fossil fuels increased.

Question 4

In what way are greenhouse gases considered beneficial?

Accepted Answer

Greenhouse gases have existed

Question 5

Over one particular week in August,the average air temperature is 36°C in the Midwestern United States.This is a reference to

Accepted Answer

A)  climate. 
B)  weather. 
C)  climate change. 
D)  global warming. 
A)  climate. 
B)  weather. 
C)  climate change. 
D)  global warming.

Question 6

There are many deserts at 30° latitude because at this altitude,dry air

Accepted Answer

A)  rises. 
B)  sinks. 
C)  cools. 
D)  warms. 
A)  rises. 
B)  sinks. 
C)  cools. 
D)  warms.

Question 7

Atmospheric scientists anticipate a 3.5°C temperature rise in the next century.What impacts would such a change bring?

Accepted Answer

A)  Some plant and animal species would migrate to cooler locations, whereas others would become extinct. 
B)  There would be a positive impact on the world's agricultural systems as ocean evaporation and terrestrial rainfall increase. 
C)  Sea levels could rise high enough to improve the ease of navigability and shipping. 
D)  The polar ice caps would increase in size. 
A)  Some plant and animal species would migrate to cooler locations, whereas others would become extinct. 
B)  There would be a positive impact on the world's agricultural systems as ocean evaporation and terrestrial rainfall increase. 
C)  Sea levels could rise high enough to improve the ease of navigability and shipping. 
D)  The polar ice caps would increase in size.

Question 8

Climate change increases fires in the rainforest.This will

Accepted Answer

A)  decrease climate change as carbon sinks are formed. 
B)  decrease climate change as carbon reservoirs are released. 
C)  further increase climate change as carbon sinks are formed. 
D)  further increase climate change as carbon reservoirs are released. 
A)  decrease climate change as carbon sinks are formed. 
B)  decrease climate change as carbon reservoirs are released. 
C)  further increase climate change as carbon sinks are formed. 
D)  further increase climate change as carbon reservoirs are released.

Question 9

An increase in average temperatures worldwide is called

Accepted Answer

A)  climate change. 
B)  global warming. 
C)  the greenhouse effect. 
D)  weather pattern shift. 
A)  climate change. 
B)  global warming. 
C)  the greenhouse effect. 
D)  weather pattern shift.

Question 10

According to the infographic below,which of the following activities would MOST reduce deforestation?

Accepted Answer

A)  expanding public transportation 
B)  finding alternative ways to provide for global food demands 
C)  limiting the amount of mining activity in Latin America 
D)  finding alternative ways to provide food for subsistence farmers 
A)  expanding public transportation 
B)  finding alternative ways to provide for global food demands 
C)  limiting the amount of mining activity in Latin America 
D)  finding alternative ways to provide food for subsistence farmers

Question 11

Historically,an unusual aspect of the recent rise in CO₂ levels is that

Accepted Answer

A)  there is no known mechanism for its occurrence. 
B)  CO₂ reacts so quickly with other compounds that it should not be occurring. 
C)  it has occurred relatively slowly. 
D)  it has occurred relatively rapidly. 
A)  there is no known mechanism for its occurrence. 
B)  CO₂ reacts so quickly with other compounds that it should not be occurring. 
C)  it has occurred relatively slowly. 
D)  it has occurred relatively rapidly.

Question 12

Which of the following is NOT a major factor in shaping the climate of a local region?

Accepted Answer

A)  the intensity of solar radiation 
B)  global patterns of atmospheric circulation 
C)  the dominant herbivorous organisms of a region 
D)  global patterns of oceanic circulation 
A)  the intensity of solar radiation 
B)  global patterns of atmospheric circulation 
C)  the dominant herbivorous organisms of a region 
D)  global patterns of oceanic circulation

Question 13

An example of a study focused on the biosphere is one that measures how

Accepted Answer

A)  introducing wolves into an area affects the deer population. 
B)  building a dam affects plants and animal populations in an area. 
C)  human habitation has changed the population size of caribou in a decade. 
D)  acidification of the oceans affects aquatic and terrestrial organisms. 
A)  introducing wolves into an area affects the deer population. 
B)  building a dam affects plants and animal populations in an area. 
C)  human habitation has changed the population size of caribou in a decade. 
D)  acidification of the oceans affects aquatic and terrestrial organisms.

Question 14

Which of the following choices is a major difference between human-caused global change and that which occurs naturally?

Accepted Answer

A)  Human-caused global change occurs more quickly, leaving organisms less time to adapt. 
B)  Human-caused global changes are of a smaller scale than naturally caused changes. 
C)  Naturally caused global change occurs only at one place on Earth at a time. 
D)  Naturally caused global changes are limited to the terrestrial habitats where humans live. 
A)  Human-caused global change occurs more quickly, leaving organisms less time to adapt. 
B)  Human-caused global changes are of a smaller scale than naturally caused changes. 
C)  Naturally caused global change occurs only at one place on Earth at a time. 
D)  Naturally caused global changes are limited to the terrestrial habitats where humans live.

Question 15

Burning forests will ________ carbon levels in the atmosphere,which will ________ climate change.

Accepted Answer

A)  increase; increase 
B)  increase; decrease 
C)  decrease; increase 
D)  decrease; decrease 
A)  increase; increase 
B)  increase; decrease 
C)  decrease; increase 
D)  decrease; decrease

Question 16

How much has Earth's mean surface temperature increased since the early twentieth century?

Accepted Answer

A)  32° F (0°
C)  
B)  1.4° F (0.8°
C)  
C)  2o F (1.1°
C)  
D)  11.5o F (1.8°
C)  
A)  32° F (0°
C)  
B)  1.4° F (0.8°
C)  
C)  2o F (1.1°
C)  
D)  11.5o F (1.8°
C)

Question 17

In comparison to past estimates,extinction rates are currently high.Which of the following is the MOST plausible explanation?

Accepted Answer

A)  Natural fluctuations in climate causes extinctions. 
B)  Continental drift is causing rapid changes in climate, which, in turn, causes extinctions. 
C)  Previous extinctions make survival of contemporary species more difficult. 
D)  Humans are affecting many aspects of the global environment. 
A)  Natural fluctuations in climate causes extinctions. 
B)  Continental drift is causing rapid changes in climate, which, in turn, causes extinctions. 
C)  Previous extinctions make survival of contemporary species more difficult. 
D)  Humans are affecting many aspects of the global environment.

Question 18

Burning of fossil fuels releases the greenhouse gas ________,which is correlated to an increase in Earth's surface temperature.

Accepted Answer

The answer of Burning of fossil fuels releases the greenhouse...

Question 19

The term "biotic" includes

Accepted Answer

A)  all living organisms. 
B)  all nonliving components of the biosphere. 
C)  both living and nonliving components of the biosphere. 
D)  only those living and nonliving factors that interact with each other. 
A)  all living organisms. 
B)  all nonliving components of the biosphere. 
C)  both living and nonliving components of the biosphere. 
D)  only those living and nonliving factors that interact with each other.

Question 20

Which of the following terms describes all organisms on Earth plus their environments?

Accepted Answer

A)  biosphere 
B)  ecosystem 
C)  habitat 
D)  species 
A)  biosphere 
B)  ecosystem 
C)  habitat 
D)  species

Exam 18: General Principles of Ecology

What is an ecological footprint,and what unit is used to express one's ecological footprint?

Which term encompasses all the others?

The levels of carbon dioxide in the atmosphere

In what way are greenhouse gases considered beneficial?

Over one particular week in August,the average air temperature is 36°C in the Midwestern United States.This is a reference to

There are many deserts at 30° latitude because at this altitude,dry air

Atmospheric scientists anticipate a 3.5°C temperature rise in the next century.What impacts would such a change bring?

Climate change increases fires in the rainforest.This will

An increase in average temperatures worldwide is called

According to the infographic below,which of the following activities would MOST reduce deforestation?

Historically,an unusual aspect of the recent rise in CO₂ levels is that

Which of the following is NOT a major factor in shaping the climate of a local region?

An example of a study focused on the biosphere is one that measures how

Which of the following choices is a major difference between human-caused global change and that which occurs naturally?

Burning forests will ________ carbon levels in the atmosphere,which will ________ climate change.

How much has Earth's mean surface temperature increased since the early twentieth century?

In comparison to past estimates,extinction rates are currently high.Which of the following is the MOST plausible explanation?

Burning of fossil fuels releases the greenhouse gas ________,which is correlated to an increase in Earth's surface temperature.

The term "biotic" includes

Which of the following terms describes all organisms on Earth plus their environments?

The Nature of Science

Evaluating Scientific Claims

Chemistry of Life

Life Is Cellular

How Cells Work

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

Adaptation and Species

The History of Life

Bacteria and Archaea

Plants, Fungi, and Protists

Animals and Human Evolution

Growth of Populations

Communities of Organisms

Ecosystems

Filters

Burning forests will carbon levels in the atmosphere,which will climate change.