TEST BANK
TEST BANK
,Contents
Chapter 1: Key Themes in Environmental Sciences ...................................................... 2
Chapter 2: Science as a Way of Knowing: Critical Thinking about the Environment .. 13
Chapter 3: The Big Picture: Systems of Change .......................................................... 22
Chapter 4: The Human Population and the Environment ............................................ 33
Chapter 5: Ecosystems: Concepts and Fundamentals ................................................ 42
Chapter 6: The Biogeochemical Cycles ........................................................................ 51
Chapter 7 Dollars and Environmental Sense: Economics of Environmental Issues... 60
Chapter 8: Biological Diversity and Biological Invasions ............................................ 71
Chapter 9: Ecological Restoration ................................................................................ 82
Chapter 10: Environmental Health, Pollution, and Toxicology .................................... 92
Chapter 11: Agriculture, Aquaculture, and the Environment...................................... 101
Chapter 12: Landscapes: Forests, Parks, and Wilderness ......................................... 110
Chapter 13: Wildlife, Fisheries, and Endangered Species .......................................... 120
Chapter 14: Energy: Some Basics ............................................................................... 130
Chapter 15: Fossil Fuels and the Environment........................................................... 139
Chapter 16: Alternative Energy and the Environment ................................................ 148
Chapter 17: Nuclear Energy and the Environment ..................................................... 157
Chapter 18: Water Supply, Use, and Management ..................................................... 166
Chapter 19: Water Pollution and Treatment ............................................................... 175
Chapter 20: The Atmosphere, Climate, and Global Warming..................................... 185
Chapter 21: Air Pollution ............................................................................................. 194
Chapter 23: Materials Management ........................................................................... 212
Chapter 24: Our Environmental Future ....................................................................... 221
,Chapter 1: Key Themes in Environmental Sciences
1. In the Amboseli National Reserve study, scientists rejected overgrazing and elephant
damage as primary drivers of woodland loss. What did their analysis conclude was the
primary cause of environmental change?
a. Intensive agricultural clearing by the Maasai people
b. Fluctuations in rainfall that impacted groundwater salinity
c. The introduction of invasive non-native plant species
d. Increased soil acidity resulting from volcanic ash
ANS: b.
Rationale: The study concluded that cyclic changes in rainfall altered groundwater
levels, which increased soil salinity and killed fever-tree root systems, thereby serving
as the primary driver of vegetation change.
2. Which of the following observations specifically helped scientists disprove the
hypothesis that elephant damage was the primary cause of fever-tree woodland
decline at Amboseli?
a. Areas with the highest cattle density showed the least tree damage.
b. Dead trees were found in areas where cattle had been excluded since 1961.
c. Elephant populations were actually declining during the period of woodland loss.
d. Elephant-induced damage increased only after the trees had already begun to die.
ANS: d.
Rationale: Researchers observed that the incidence of elephant damage increased as
the woodland density decreased, indicating that elephant impact was a secondary
effect of habitat loss rather than its primary cause.
3. Based on the Amboseli case study, how should environmental scientists approach
identifying the causes of observed ecological shifts?
, a. By focusing exclusively on the most visible human-induced stressors.
b. By testing the most popular media-reported hypothesis first.
c. By examining a complex web of interactions rather than single factors.
d. By assuming the most recent historical events are the root cause.
ANS: c.
Rationale: The Amboseli story demonstrates that environmental change is rarely
caused by a single factor and requires a systemic view of physical, biological, and
human-use factors.
4. The conflict between the Maasai people and lions in Amboseli involves economic
and conservation goals. What is the most effective approach mentioned for resolving
such conflicts?
a. Enforcing a total ban on all human activities within the reserve.
b. Transitioning Maasai culture to entirely sedentary farming lifestyles.
c. Aligning the value of live predators with economic incentives such as tourism.
d. Replacing natural predators with protected domestic livestock breeds.
ANS: c.
Rationale: The case study notes that when Maasai see the value of protecting lions for
tourism income, they are more likely to support conservation efforts, illustrating the
role of value judgments in problem-solving.
5. Which of the following best defines sustainability as used in environmental science?
a. The cessation of all human resource consumption.
b. Maintaining a steady state where all resources are perfectly recycled.
c. Using resources at a rate that allows them to be replenished for the future.
d. The rapid growth of the global economy to increase living standards.
ANS: c.
TEST BANK
,Contents
Chapter 1: Key Themes in Environmental Sciences ...................................................... 2
Chapter 2: Science as a Way of Knowing: Critical Thinking about the Environment .. 13
Chapter 3: The Big Picture: Systems of Change .......................................................... 22
Chapter 4: The Human Population and the Environment ............................................ 33
Chapter 5: Ecosystems: Concepts and Fundamentals ................................................ 42
Chapter 6: The Biogeochemical Cycles ........................................................................ 51
Chapter 7 Dollars and Environmental Sense: Economics of Environmental Issues... 60
Chapter 8: Biological Diversity and Biological Invasions ............................................ 71
Chapter 9: Ecological Restoration ................................................................................ 82
Chapter 10: Environmental Health, Pollution, and Toxicology .................................... 92
Chapter 11: Agriculture, Aquaculture, and the Environment...................................... 101
Chapter 12: Landscapes: Forests, Parks, and Wilderness ......................................... 110
Chapter 13: Wildlife, Fisheries, and Endangered Species .......................................... 120
Chapter 14: Energy: Some Basics ............................................................................... 130
Chapter 15: Fossil Fuels and the Environment........................................................... 139
Chapter 16: Alternative Energy and the Environment ................................................ 148
Chapter 17: Nuclear Energy and the Environment ..................................................... 157
Chapter 18: Water Supply, Use, and Management ..................................................... 166
Chapter 19: Water Pollution and Treatment ............................................................... 175
Chapter 20: The Atmosphere, Climate, and Global Warming..................................... 185
Chapter 21: Air Pollution ............................................................................................. 194
Chapter 23: Materials Management ........................................................................... 212
Chapter 24: Our Environmental Future ....................................................................... 221
,Chapter 1: Key Themes in Environmental Sciences
1. In the Amboseli National Reserve study, scientists rejected overgrazing and elephant
damage as primary drivers of woodland loss. What did their analysis conclude was the
primary cause of environmental change?
a. Intensive agricultural clearing by the Maasai people
b. Fluctuations in rainfall that impacted groundwater salinity
c. The introduction of invasive non-native plant species
d. Increased soil acidity resulting from volcanic ash
ANS: b.
Rationale: The study concluded that cyclic changes in rainfall altered groundwater
levels, which increased soil salinity and killed fever-tree root systems, thereby serving
as the primary driver of vegetation change.
2. Which of the following observations specifically helped scientists disprove the
hypothesis that elephant damage was the primary cause of fever-tree woodland
decline at Amboseli?
a. Areas with the highest cattle density showed the least tree damage.
b. Dead trees were found in areas where cattle had been excluded since 1961.
c. Elephant populations were actually declining during the period of woodland loss.
d. Elephant-induced damage increased only after the trees had already begun to die.
ANS: d.
Rationale: Researchers observed that the incidence of elephant damage increased as
the woodland density decreased, indicating that elephant impact was a secondary
effect of habitat loss rather than its primary cause.
3. Based on the Amboseli case study, how should environmental scientists approach
identifying the causes of observed ecological shifts?
, a. By focusing exclusively on the most visible human-induced stressors.
b. By testing the most popular media-reported hypothesis first.
c. By examining a complex web of interactions rather than single factors.
d. By assuming the most recent historical events are the root cause.
ANS: c.
Rationale: The Amboseli story demonstrates that environmental change is rarely
caused by a single factor and requires a systemic view of physical, biological, and
human-use factors.
4. The conflict between the Maasai people and lions in Amboseli involves economic
and conservation goals. What is the most effective approach mentioned for resolving
such conflicts?
a. Enforcing a total ban on all human activities within the reserve.
b. Transitioning Maasai culture to entirely sedentary farming lifestyles.
c. Aligning the value of live predators with economic incentives such as tourism.
d. Replacing natural predators with protected domestic livestock breeds.
ANS: c.
Rationale: The case study notes that when Maasai see the value of protecting lions for
tourism income, they are more likely to support conservation efforts, illustrating the
role of value judgments in problem-solving.
5. Which of the following best defines sustainability as used in environmental science?
a. The cessation of all human resource consumption.
b. Maintaining a steady state where all resources are perfectly recycled.
c. Using resources at a rate that allows them to be replenished for the future.
d. The rapid growth of the global economy to increase living standards.
ANS: c.
