Question 1

Which of the following types of compounds have been implicated in ozone depletion?

Accepted Answer

A)   chlorofluorocarbons (CFCs) 
B)   volatile organic compounds (VOCs) 
C)   DDT
D)   polychlorinated biphenyls (PCBs) 
E)   chromiumF) A) and C)
G) A) and E)

Question 2

Which of the following has reduced fishing pressures on wild populations?

Accepted Answer

A)   depletion of fish populations through overfishing
B)   use of aquaculture/aquafarming
C)   herbicide and pesticide use
D)   new technologies that increase fishing efficiency
E)   water pollutionF) C) and E)
G) A) and E) B

Question 3

Agriculture, industrial use, and domestic use are the largest uses of freshwater supplies, in that order.

Accepted Answer

A) True 
 B)False

Question 4

Human society in its current form is unsustainable because

Accepted Answer

A)   important natural resources are being consumed more quickly than they can be replenished.
B)   renewable energy sources require too many land and this is reducing the area available for farming.
C)   recycling has eliminated the need for the mining of some mineral resources.
D)   freshwater is being effectively preserved through conservation.
E)   diverting agricultural yield for feeding livestock supplies enoughprotein to fulfill community's dietary needs.F) None of the above
G) A) and C)

Question 5

The major cause of the loss in Earth's biodiversity is

Accepted Answer

A)   fossil fuel usage.
B)   pollution.
C)   habitat loss.
D)   overfishing and water pollution.
E)   agricultural runoff.F) All of the above
G) A) and B) C

Question 6

Which of the following is a benefit of biodiversity?

Accepted Answer

A)   development of novel medicines
B)   waste disposal
C)   new and better crop plants
D)   climate regulation
E)   All of the choices are benefits of biodivesity.F) A) and B)
G) C) and D)

Question 7

Which of the following groups is suspected of causing climate change?

Accepted Answer

A)   fossil fuel usage, deforestation, and agriculture
B)   overfishing and hydropower usage
C)   fossil fuel usage and overfishing
D)   salinization and desertification
E)   erosion, deforestation, pollution, and salinizationF) B) and E)
G) A) and E)

Question 8

Most of the world's freshwater supply is used for

Accepted Answer

A)   drinking water by humans.
B)   bathing by humans.
C)   irrigating crops.
D)   drinking water for livestock.
E)   boating and recreation.F) B) and E)
G) B) and D)

Question 9

In which ways does overfishing lead to decreased biodiversity?

Accepted Answer

A)   It reduces the available habitat for other species.
B)   Overfishing allows fished species to overpopulate once the larger individuals are removed from the population, which in turn depletes the species' food sources.
C)   Newer technologies allow the fishing fleet to take a larger catch while leaving larger numbers of breeding pairs, which overpopulate and degrade the environment.
D)   It depletes fish that feed on some species and serve as food sources for other species, leading to the eradication of some species and the overpopulation of others.
E)   It depletes food sources for aquatic mammals, which then overpopulate.F) A) and B)
G) A) and C)

Question 10

Which of the following is a drawback to the use of hydropower?

Accepted Answer

A)   Hydropower consumes more fossil fuels than power plants fueled solely by fossil fuels.
B)   More countries derive more power from fossil fuels as compared to hydropower.
C)   Hydropower causes more pollution than fossil fuels, such as coal or oil.
D)   Hydropower is less efficient as compared to fossil fuels, such as coal or oil.
E)   Water levels below dams are reduced, and large dams disrupt upstream ecosystems.F) B) and D)
G) A) and C)

Question 11

Which subfield directly supports conservation biology?

Accepted Answer

A)   genetics
B)   ecology
C)   wildlife management
D)   field biology
E)   All of the subfields listed support conservation biology.F) A) and B)
G) A) and C)

Question 12

Desertification and deforestation are similar in that both involve

Accepted Answer

A)   overpopulation of an area by humans.
B)   loss of plant and animal life in an area.
C)   lack of rainfall in an area.
D)   overgrowth of undesirable plants in an area.
E)   loss of wetland habitats.F) A) and D)
G) A) and E)

Question 13

Beach erosion is often caused by structures built to prevent erosion.

Accepted Answer

A) True 
 B)False

Question 14

Extensive irrigation may contribute to desertification because

Accepted Answer

A)   the water dissolves soil nutrients, making them unavailable to plants.
B)   water used in irrigation leaves behind toxic substances in the soil.
C)   runoff of water leaves silt deposits behind, which reduce the ability of plants to grow.
D)   a reduction of water available in the aquifer lowers lake, river, and stream levels.
E)   evaporation of water used in irrigation causes salinization of the land, reducing the ability of plants to grow.F) A) and D)
G) C) and D)

Question 15

Before solar energy can become usable for consumers, which of the following events must occur?

Accepted Answer

A)   Energy must be collected, converted into another form, and stored until needed.
B)   Energy must be converted into another form, stored until needed, and then converted into heat.
C)   Energy must be used to heat water, and solar energy is combined with steam to heat a photovoltaic system that produces electricity.
D)   Solar energy passes through a photovoltaic cell, which then stores the energy as heat until it is needed.
E)   Solar energy is used to power a photovoltaic cell, which splits water into hydrogen and oxygen, and the hydrogen can be used to provide energy.F) All of the above
G) B) and D)

Question 16

Which of the following is inconsistent with the idea of making urban environments more sustainable?

Accepted Answer

A)   development of more energy-efficient means of transportation
B)   utilization of "green roofs"
C)   creation of "greenbelts"
D)   development of new sections in cities as older ones become dilapidated and unusable
E)   use of native species in landscaping that require less maintenance and attract bees and butterfliesF) B) and C)
G) A) and C)

Question 17

Which of the following would have the greatest influence in creating a more sustainable urbansociety?

Accepted Answer

A)   improving the efficiency of water filtration systems in order to decrease our consumption of freshwater
B)   increasing fuel efficiency in our vehicles so we can decrease the consumption of fossil fuels
C)   decreasing the amount of environmental pollution produced by industry
D)   decreasing the amount of land that is altered in order to accommodate human desires (new homes, factories, agriculture, etc.) 
E)   exploring alternative energy sources that are more environmentally favorable (i.e., solar, hydropower, etc.) F) A) and C)
G) A) and B)

Question 18

Extensive irrigation may contribute to global climate change because it may cause droughts in some semiarid regions of the world.

Accepted Answer

A) True 
 B)False  False

Question 19

Habitat destruction is the largest cause of the loss in biodiversity worldwide.

Accepted Answer

A) True 
 B)False

Question 20

The main goal of conservation biology is to

Accepted Answer

A)   conserve natural resources for this and future generations.
B)   promote the needs of certain ecosystems that are determined to be in danger.
C)   prevent the hunting and fishing of species.
D)   prevent the building of large structures like shopping malls and businesses.
E)   promote the welfare of endangered species.F) A) and C)
G) C) and E)

Exam 32: Human Impact on the Biosphere

Which of the following types of compounds have been implicated in ozone depletion?

Correct AnswerverifiedShow Answer

Which of the following has reduced fishing pressures on wild populations?

Correct AnswerverifiedB

Agriculture, industrial use, and domestic use are the largest uses of freshwater supplies, in that order.

Correct AnswerverifiedShow Answer

Human society in its current form is unsustainable because

Correct AnswerverifiedShow Answer

The major cause of the loss in Earth's biodiversity is

Correct AnswerverifiedC

Which of the following is a benefit of biodiversity?

Correct AnswerverifiedShow Answer

Which of the following groups is suspected of causing climate change?

Correct AnswerverifiedShow Answer

Most of the world's freshwater supply is used for

Correct AnswerverifiedShow Answer

In which ways does overfishing lead to decreased biodiversity?

Correct AnswerverifiedShow Answer

Which of the following is a drawback to the use of hydropower?

Correct AnswerverifiedShow Answer

Which subfield directly supports conservation biology?

Correct AnswerverifiedShow Answer

Desertification and deforestation are similar in that both involve

Correct AnswerverifiedShow Answer

Beach erosion is often caused by structures built to prevent erosion.

Correct AnswerverifiedShow Answer

Extensive irrigation may contribute to desertification because

Correct AnswerverifiedShow Answer

Before solar energy can become usable for consumers, which of the following events must occur?

Correct AnswerverifiedShow Answer

Which of the following is inconsistent with the idea of making urban environments more sustainable?

Correct AnswerverifiedShow Answer

Which of the following would have the greatest influence in creating a more sustainable urbansociety?

Correct AnswerverifiedShow Answer

Extensive irrigation may contribute to global climate change because it may cause droughts in some semiarid regions of the world.

Correct AnswerverifiedFalse

Habitat destruction is the largest cause of the loss in biodiversity worldwide.

Correct AnswerverifiedShow Answer

The main goal of conservation biology is to

Correct AnswerverifiedShow Answer

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C

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