Question 1

In a positive feedback cycle,drought encourages ____,which results in more drought.

Accepted Answer

A)  overgrazing 
B)  biological magnification 
C)  bioaccumulation 
D)  desertification 
E)  deforestation 
A)  overgrazing 
B)  biological magnification 
C)  bioaccumulation 
D)  desertification 
E)  deforestation

Question 2

Elephants are killed for their tusks and rhinos for their horns.This is an example of __________ for traditional medicine and ornaments.

Accepted Answer

The answer of Elephants are killed for their tusks and...

Question 3

Choose the one most appropriate answer for each.
-Biological magnification

Accepted Answer

A) Species that remains restricted to the area where it evolved 
B) Species that fail to turn up signs of any individuals after repeated, extensive surveys of its known range 
C) New method of harvesting trees to preserve diversity 
D) Field of biology that documents biodiversity, and seeks way to maintain it to ensure our survival 
E) Species vulnerable to extinction
F)Work designed to renew or recreate a natural system that has been degraded or destroyed
G)Places that have species found nowhere else and are under great threat of destruction
H)Species likely to become endangered in the near future
I)Chemical pollutant becomes increasingly concentrated as it moves up through food chains
J)Narrow corridor of vegetation along a stream or river
K)An organism builds up increasing amounts of a chemical pollutant it its tissues over time 
A) Species that remains restricted to the area where it evolved 
B) Species that fail to turn up signs of any individuals after repeated, extensive surveys of its known range 
C) New method of harvesting trees to preserve diversity 
D) Field of biology that documents biodiversity, and seeks way to maintain it to ensure our survival 
E) Species vulnerable to extinction
F)Work designed to renew or recreate a natural system that has been degraded or destroyed
G)Places that have species found nowhere else and are under great threat of destruction
H)Species likely to become endangered in the near future
I)Chemical pollutant becomes increasingly concentrated as it moves up through food chains
J)Narrow corridor of vegetation along a stream or river
K)An organism builds up increasing amounts of a chemical pollutant it its tissues over time

Question 4

What caused the greatest mass extinction,in terms of species lost,at the end of the Permian?

Accepted Answer

A)  Global cooling 
B)  Sea level decline 
C)  Asteroid impact 
D)  Overhunting by humans 
E)  Increased volcanic activity 
A)  Global cooling 
B)  Sea level decline 
C)  Asteroid impact 
D)  Overhunting by humans 
E)  Increased volcanic activity

Question 5

Choose the one most appropriate answer for each.
-Ecological restoration

Accepted Answer

A) Species that remains restricted to the area where it evolved 
B) Species that fail to turn up signs of any individuals after repeated, extensive surveys of its known range 
C) New method of harvesting trees to preserve diversity 
D) Field of biology that documents biodiversity, and seeks way to maintain it to ensure our survival 
E) Species vulnerable to extinction
F)Work designed to renew or recreate a natural system that has been degraded or destroyed
G)Places that have species found nowhere else and are under great threat of destruction
H)Species likely to become endangered in the near future
I)Chemical pollutant becomes increasingly concentrated as it moves up through food chains
J)Narrow corridor of vegetation along a stream or river
K)An organism builds up increasing amounts of a chemical pollutant it its tissues over time 
A) Species that remains restricted to the area where it evolved 
B) Species that fail to turn up signs of any individuals after repeated, extensive surveys of its known range 
C) New method of harvesting trees to preserve diversity 
D) Field of biology that documents biodiversity, and seeks way to maintain it to ensure our survival 
E) Species vulnerable to extinction
F)Work designed to renew or recreate a natural system that has been degraded or destroyed
G)Places that have species found nowhere else and are under great threat of destruction
H)Species likely to become endangered in the near future
I)Chemical pollutant becomes increasingly concentrated as it moves up through food chains
J)Narrow corridor of vegetation along a stream or river
K)An organism builds up increasing amounts of a chemical pollutant it its tissues over time

Question 6

Answer the following questions in reference to the four geologic periods listed below.
-Oceans became anoxic,and methane burned on land.

Accepted Answer

A) Cretaceous 
B) Anthropocene 
C) Devonian 
D) Permian 
A) Cretaceous 
B) Anthropocene 
C) Devonian 
D) Permian

Question 7

The rate of extinction picks up dramatically during a(n)__________,when a large proportion of Earth's organisms become extinct in a relatively short period of geologic time.

Accepted Answer

The answer of The rate of extinction picks up dramatically...

Question 8

In _________________,an exposed organism accumulates increasing amounts of a chemical pollutant in its tissues over the course of its lifetime.

Accepted Answer

A)  atmospheric deposition 
B)  deforestation 
C)  desertification 
D)  bioaccumulation 
E)  biological magnification 
A)  atmospheric deposition 
B)  deforestation 
C)  desertification 
D)  bioaccumulation 
E)  biological magnification

Question 9

Polar bears are top predators,and tests on their tissues have shown a surprising ____.

Accepted Answer

A)  resistance to warming 
B)  amount of protein 
C)  resistance to disease 
D)  amount of mercury and organic pesticides 
E)  amount of nutrients 
A)  resistance to warming 
B)  amount of protein 
C)  resistance to disease 
D)  amount of mercury and organic pesticides 
E)  amount of nutrients

Question 10

Once they are identified,____ take priority in worldwide conservation efforts.

Accepted Answer

A)  healthy ecosystems 
B)  riparian zones 
C)  hot spots 
D)  grasslands 
E)  forests 
A)  healthy ecosystems 
B)  riparian zones 
C)  hot spots 
D)  grasslands 
E)  forests

Question 11

Ammonia released by fertilizers and animal wastes affect the environment by ____.

Accepted Answer

A)  combining with sulfur and nitrogen oxides in the air to form salts that end up fertilizing the ground 
B)  degrading into nitrites and completing the nitrogen cycle 
C)  poisoning rivers and lakes 
D)  acidifying oceans 
E)  accumulating in animal bodies 
A)  combining with sulfur and nitrogen oxides in the air to form salts that end up fertilizing the ground 
B)  degrading into nitrites and completing the nitrogen cycle 
C)  poisoning rivers and lakes 
D)  acidifying oceans 
E)  accumulating in animal bodies

Question 12

Which of the following statements is NOT correct regarding nonrenewable fuel resources?

Accepted Answer

A)  Burning these nonrenewable fuels contributes to global warming. 
B)  Burning these nonrenewable fuels contributes to acid rain. 
C)  Extracting and transporting these fuels has negative ecological impacts. 
D)  Oil harms species when it leaks from pipelines, ships, or wells. 
E)  Nonrenewable energy sources do not produce greenhouse gases. 
A)  Burning these nonrenewable fuels contributes to global warming. 
B)  Burning these nonrenewable fuels contributes to acid rain. 
C)  Extracting and transporting these fuels has negative ecological impacts. 
D)  Oil harms species when it leaks from pipelines, ships, or wells. 
E)  Nonrenewable energy sources do not produce greenhouse gases.

Question 13

Exotic species that are introduced into a non-native habitat can ____.

Accepted Answer

A)  interbreed with native species 
B)  drive endemic species to extinction 
C)  die out due to competition from native species 
D)  blend in with endemic species 
E)  create habitat islands for themselves 
A)  interbreed with native species 
B)  drive endemic species to extinction 
C)  die out due to competition from native species 
D)  blend in with endemic species 
E)  create habitat islands for themselves

Question 14

Ultimately,the health of life on Earth depends on our ability to live within our limits.The goal is to live ____.

Accepted Answer

A)  extravagantly 
B)  carelessly 
C)  frugally 
D)  fearfully 
E)  sustainably 
A)  extravagantly 
B)  carelessly 
C)  frugally 
D)  fearfully 
E)  sustainably

Question 15

Choose the one most appropriate answer for each.
-Bioaccumulation

Accepted Answer

A) Species that remains restricted to the area where it evolved 
B) Species that fail to turn up signs of any individuals after repeated, extensive surveys of its known range 
C) New method of harvesting trees to preserve diversity 
D) Field of biology that documents biodiversity, and seeks way to maintain it to ensure our survival 
E) Species vulnerable to extinction
F)Work designed to renew or recreate a natural system that has been degraded or destroyed
G)Places that have species found nowhere else and are under great threat of destruction
H)Species likely to become endangered in the near future
I)Chemical pollutant becomes increasingly concentrated as it moves up through food chains
J)Narrow corridor of vegetation along a stream or river
K)An organism builds up increasing amounts of a chemical pollutant it its tissues over time 
A) Species that remains restricted to the area where it evolved 
B) Species that fail to turn up signs of any individuals after repeated, extensive surveys of its known range 
C) New method of harvesting trees to preserve diversity 
D) Field of biology that documents biodiversity, and seeks way to maintain it to ensure our survival 
E) Species vulnerable to extinction
F)Work designed to renew or recreate a natural system that has been degraded or destroyed
G)Places that have species found nowhere else and are under great threat of destruction
H)Species likely to become endangered in the near future
I)Chemical pollutant becomes increasingly concentrated as it moves up through food chains
J)Narrow corridor of vegetation along a stream or river
K)An organism builds up increasing amounts of a chemical pollutant it its tissues over time

Question 16

Choose the one most appropriate answer for each.
-Biodiversity hot spots

Accepted Answer

A) Species that remains restricted to the area where it evolved 
B) Species that fail to turn up signs of any individuals after repeated, extensive surveys of its known range 
C) New method of harvesting trees to preserve diversity 
D) Field of biology that documents biodiversity, and seeks way to maintain it to ensure our survival 
E) Species vulnerable to extinction
F)Work designed to renew or recreate a natural system that has been degraded or destroyed
G)Places that have species found nowhere else and are under great threat of destruction
H)Species likely to become endangered in the near future
I)Chemical pollutant becomes increasingly concentrated as it moves up through food chains
J)Narrow corridor of vegetation along a stream or river
K)An organism builds up increasing amounts of a chemical pollutant it its tissues over time 
A) Species that remains restricted to the area where it evolved 
B) Species that fail to turn up signs of any individuals after repeated, extensive surveys of its known range 
C) New method of harvesting trees to preserve diversity 
D) Field of biology that documents biodiversity, and seeks way to maintain it to ensure our survival 
E) Species vulnerable to extinction
F)Work designed to renew or recreate a natural system that has been degraded or destroyed
G)Places that have species found nowhere else and are under great threat of destruction
H)Species likely to become endangered in the near future
I)Chemical pollutant becomes increasingly concentrated as it moves up through food chains
J)Narrow corridor of vegetation along a stream or river
K)An organism builds up increasing amounts of a chemical pollutant it its tissues over time

Question 17

The level of the oceans is rising due to expansion of water volume stemming from ____.

Accepted Answer

A)  ozone depletion 
B)  global warming 
C)  lost species biodiversity 
D)  increased precipitation 
E)  acid rain 
A)  ozone depletion 
B)  global warming 
C)  lost species biodiversity 
D)  increased precipitation 
E)  acid rain

Question 18

The term for describing a region's biological wealth is called ____.

Accepted Answer

A)  endemic species 
B)  hot spots 
C)  biodiversity 
D)  endangered species 
E)  threatened species 
A)  endemic species 
B)  hot spots 
C)  biodiversity 
D)  endangered species 
E)  threatened species

Question 19

The current extinction rate driven by humans is estimated to be at least how much greater than the background extinction rate?

Accepted Answer

A)  2 
B)  5 
C)  10 
D)  50 
E)  100 
A)  2 
B)  5 
C)  10 
D)  50 
E)  100

Question 20

Which of the following is least likely an impact of acid rain?

Accepted Answer

A)  It stops fish egg development. 
B)  It can burn foliage. 
C)  It releases toxins in the soil. 
D)  It causes eutrophication. 
E)  It can kill adult aquatic organisms. 
A)  It stops fish egg development. 
B)  It can burn foliage. 
C)  It releases toxins in the soil. 
D)  It causes eutrophication. 
E)  It can kill adult aquatic organisms.

Exam 48: Human Impacts on the Biosphere

In a positive feedback cycle,drought encourages ____,which results in more drought.

Elephants are killed for their tusks and rhinos for their horns.This is an example of __________ for traditional medicine and ornaments.

Choose the one most appropriate answer for each. -Biological magnification

What caused the greatest mass extinction,in terms of species lost,at the end of the Permian?

Choose the one most appropriate answer for each. -Ecological restoration

Answer the following questions in reference to the four geologic periods listed below. -Oceans became anoxic,and methane burned on land.

The rate of extinction picks up dramatically during a(n)__________,when a large proportion of Earth's organisms become extinct in a relatively short period of geologic time.

In _________________,an exposed organism accumulates increasing amounts of a chemical pollutant in its tissues over the course of its lifetime.

Polar bears are top predators,and tests on their tissues have shown a surprising ____.

Once they are identified,____ take priority in worldwide conservation efforts.

Ammonia released by fertilizers and animal wastes affect the environment by ____.

Which of the following statements is NOT correct regarding nonrenewable fuel resources?

Exotic species that are introduced into a non-native habitat can ____.

Ultimately,the health of life on Earth depends on our ability to live within our limits.The goal is to live ____.

Choose the one most appropriate answer for each. -Bioaccumulation

Choose the one most appropriate answer for each. -Biodiversity hot spots

The level of the oceans is rising due to expansion of water volume stemming from ____.

The term for describing a region's biological wealth is called ____.

The current extinction rate driven by humans is estimated to be at least how much greater than the background extinction rate?

Which of the following is least likely an impact of acid rain?

Invitation to Biology

Life's Chemical Bases

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where it Starts—Photosynthesis

How Cells Release Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizing Information about Species

Life's Origin and Early Evolution

Viruses, Bacteria, and Archaea

Protists: The Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution: The Invertebrates

Animal Evolution: The Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive System

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Filters