Question 1

The "dead zone" in the Gulf of Mexico is

Accepted Answer

A)  due to oligotrophism. 
B)  the result of the toxicity of most nitrogenous compounds. 
C)  due to hypoxia from microbial activity. 
D)  due to point sources of pollution. 
E)  none of the above 
A)  due to oligotrophism. 
B)  the result of the toxicity of most nitrogenous compounds. 
C)  due to hypoxia from microbial activity. 
D)  due to point sources of pollution. 
E)  none of the above C

Question 2

Desertification is accelerated by irrigation.

Accepted Answer

A) True 
 B)False  True

Question 3

Which of the following does not contribute to the human impact on the environment?

Accepted Answer

A)  human affluence 
B)  the speed of change caused by humans 
C)  the size of the human population 
D)  the rapid evolution of humans compared to other species 
E)  none of the above 
A)  human affluence 
B)  the speed of change caused by humans 
C)  the size of the human population 
D)  the rapid evolution of humans compared to other species 
E)  none of the above D

Question 4

Boreal vascular plants are

Accepted Answer

A)  immune from the effects of climate change. 
B)  declining primarily from habitat loss. 
C)  declining primarily due to climate change. 
D)  declining more slowly than bryophytes. 
E)  none of the above 
A)  immune from the effects of climate change. 
B)  declining primarily from habitat loss. 
C)  declining primarily due to climate change. 
D)  declining more slowly than bryophytes. 
E)  none of the above

Question 5

Snowshoe hares may be affected by climate change

Accepted Answer

A)  because they cannot tolerate high temperature. 
B)  the change in coat color is timed by photoperiod not by temperature. 
C)  the change in coat color is timed by temperature not by photoperiod. 
D)  they face more predators in warmer climates. 
E)  none of the above 
A)  because they cannot tolerate high temperature. 
B)  the change in coat color is timed by photoperiod not by temperature. 
C)  the change in coat color is timed by temperature not by photoperiod. 
D)  they face more predators in warmer climates. 
E)  none of the above

Question 6

Most ocean acidification is due to HNO3 and H2SO4.

Accepted Answer

A) True 
 B)False

Question 7

Genetic modification of crops has led to an increase in the genetic diversity of corn, soybeans, and cotton.

Accepted Answer

A) True 
 B)False

Question 8

Non-point sources of pollution affect large areas; point sources of pollution affect only the local area near the emission.

Accepted Answer

A) True 
 B)False

Question 9

What are some of the important risks of genetically modified organisms (GMOs)?

Accepted Answer

Horizontal gene transfer, for

Question 10

Studies of the European tit show that

Accepted Answer

A)  this species cannot adapt to climate change. 
B)  this species is unaffected by climate change. 
C)  there is variation among tits in their adaptive response. 
D)  egg laying is independent of climate. 
E)  none of the above 
A)  this species cannot adapt to climate change. 
B)  this species is unaffected by climate change. 
C)  there is variation among tits in their adaptive response. 
D)  egg laying is independent of climate. 
E)  none of the above

Question 11

The IPAT equation probably overestimates the human impact on the environment.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following was not an important anthropogenic ecological factor in human history?

Accepted Answer

A)  the Cambrian explosion 
B)  the evolution of agriculture 
C)  European colonization of the New World 
D)  the invention of the wheel 
E)  none of the above 
A)  the Cambrian explosion 
B)  the evolution of agriculture 
C)  European colonization of the New World 
D)  the invention of the wheel 
E)  none of the above

Question 13

Acid precipitation

Accepted Answer

A)  has least effect in lakes with granite bedrock. 
B)  causes cations to leach from the soil. 
C)  probably cannot shift the pH of the entire ocean. 
D)  affects terrestrial systems more than aquatic systems. 
E)  none of the above. 
A)  has least effect in lakes with granite bedrock. 
B)  causes cations to leach from the soil. 
C)  probably cannot shift the pH of the entire ocean. 
D)  affects terrestrial systems more than aquatic systems. 
E)  none of the above.

Question 14

Ozone-depleting substances (ODSs)

Accepted Answer

A)  react more rapidly at high temperature. 
B)  react more rapidly in the dark. 
C)  are not destroyed by the reaction with ozone. 
D)  are inhibited by chlorine and bromine. 
E)  none of the above 
A)  react more rapidly at high temperature. 
B)  react more rapidly in the dark. 
C)  are not destroyed by the reaction with ozone. 
D)  are inhibited by chlorine and bromine. 
E)  none of the above

Question 15

Ecological systems have intrinsic homeostatic mechanisms.

Accepted Answer

A) True 
 B)False

Question 16

Why was the development of agriculture important in the history of human environmental impacts?

Accepted Answer

The population incre

Question 17

Why is it difficult to determine whether any particular hurricane is the result of climate change?

Accepted Answer

Many factors, human and natural, cause h

Question 18

Tropical species may be especially vulnerable to increased temperature because

Accepted Answer

A)  they are already near their thermal limit. 
B)  they are less adaptable than temperate and arctic species. 
C)  there are no higher elevations to which species can move. 
D)  increased temperature will lead to higher rainfall. 
E)  none of the above 
A)  they are already near their thermal limit. 
B)  they are less adaptable than temperate and arctic species. 
C)  there are no higher elevations to which species can move. 
D)  increased temperature will lead to higher rainfall. 
E)  none of the above

Question 19

Which of the following may be true of atmospheric CO2?

Accepted Answer

A)  The ocean will absorb the excess atmospheric CO2. 
B)  Plant photosynthesis cannot compensate for increased atmospheric CO2. 
C)  When tropical forests additional CO2 is released into the atmosphere. 
D)  As permafrost melts, more atmospheric CO2 will be absorbed. 
E)  none of the above 
A)  The ocean will absorb the excess atmospheric CO2. 
B)  Plant photosynthesis cannot compensate for increased atmospheric CO2. 
C)  When tropical forests additional CO2 is released into the atmosphere. 
D)  As permafrost melts, more atmospheric CO2 will be absorbed. 
E)  none of the above

Question 20

How does Leopold's land ethic change our interaction with the natural world?

Accepted Answer

According to Leopold we have traditional

Exam 21: Human Global Ecology

The "dead zone" in the Gulf of Mexico is

Desertification is accelerated by irrigation.

Which of the following does not contribute to the human impact on the environment?

Boreal vascular plants are

Snowshoe hares may be affected by climate change

Most ocean acidification is due to HNO3 and H2SO4.

Genetic modification of crops has led to an increase in the genetic diversity of corn, soybeans, and cotton.

Non-point sources of pollution affect large areas; point sources of pollution affect only the local area near the emission.

What are some of the important risks of genetically modified organisms (GMOs)?

Studies of the European tit show that

The IPAT equation probably overestimates the human impact on the environment.

Which of the following was not an important anthropogenic ecological factor in human history?

Acid precipitation

Ozone-depleting substances (ODSs)

Ecological systems have intrinsic homeostatic mechanisms.

Why was the development of agriculture important in the history of human environmental impacts?

Why is it difficult to determine whether any particular hurricane is the result of climate change?

Tropical species may be especially vulnerable to increased temperature because

Which of the following may be true of atmospheric CO2?

How does Leopold's land ethic change our interaction with the natural world?

Introduction to Ecology

Adaptation and Evolution

Adaptations to the Physical Environment

Terrestrial Communities

Fresh-water and Marine Communities

Behavioral Ecology

The Ecology of Intraspecific Variation

Demography

Population Regulation

Life History Strategies

Competition

Coevolution I Exploitative Interactions

Mutualism

The Structure of Communities

Ecological Succession

Species Diversity

Energy Flow and Trophic Structure

Biogeochemical Cycles

Conservation Biology

Landscape Ecology

Filters

Most ocean acidification is due to HNO₃ and H₂SO_4.

Which of the following may be true of atmospheric CO₂?