Question 1

Biodiversity increases the consumptive value of land,meaning that

Accepted Answer

A)   more value can be derived from the more diverse products produced by ecosystems with high biodiversity relative to land that has been cleared for agriculture.
B)   ecosystems with higher biodiversity consume more resources than those with lower biodiversity, creating more strain on the environment.
C)   ecosystems with low biodiversity consume resources at a higher rate than those with higher biodiversity.
D)   land that has been cleared for agriculture consumes natural resources at a slower rate and is cheaper to maintain.
E)   land with lower biodiversity has many more possible uses for humans than land with higher biodiversity.F) A) and B)
G) D) and E)

Question 2

Which of the following is not an example of measures that may make urban environments 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) A) and B)
G) A) and C)

Question 3

An accumulation of salts due to evaporation of irrigation water is called

Accepted Answer

A)   salinization.
B)   desalinization.
C)   desertification.
D)   forestation.
E)   sedimentation.F) A) and C)
G) A) and E) A

Question 4

Which of the following practices would play the greatest role in reversing the loss of biodiversity on Earth?

Accepted Answer

A)   redesigning city developments to revitalize existing areas instead of developing new ones
B)   increase the number of species housed in zoos and captive environments
C)   establish large-scale captive breeding programs to help bolster wild populations
D)   preserve the genetic material of endangered species
E)   eliminate the opportunity for invasive species to establish themselves in new communitiesF) A) and D)
G) All of the above

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) D) and E)

Question 6

Deforestation may contribute towards climate change because

Accepted Answer

A)   the trees naturally trap heat near the Earth's surface, and the loss of trees allows this heat to escape into space through the atmosphere.
B)   it leads to habitat loss for many forest species, which invade nearby marginal habitats, including those used by humans.
C)   loss of trees disrupts the carbon cycle, limiting the amount that is absorbed by plants, and increasing the concentration of carbon dioxide in the atmosphere.
D)   the forest canopy reflects some solar radiation back into space, allowing more of it to penetrate to the Earth's surface.
E)   it leads to salinization of the land.F) B) and D)
G) A) and D)

Question 7

Which indirect value of biodiversity will have the greatest economical value to people?

Accepted Answer

A)   a twenty hectare marshland that acts as a sponge for rainwater
B)   the ecotourism market in the United States
C)   two hundred hectares of wetlands in Canada that soak up pollutants and purify water
D)   forests that decrease erosion along the banks of rivers in Philippines
E)   a row of trees that act as a wind block, on the northwest side of our homes, decreasing our need for air conditioning and cooling systems in the summerF) C) and D)
G) A) and E) C

Question 8

Wildlife management is a subfield of biology that supports conservation biology.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following features would have the greatest influence in creating a more sustainable urban society?

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 D)
G) B) and E) D

Question 10

Before solar energy can become a competitive form of energy available 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) B) and C)
G) A) and C)

Question 11

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) All of the above
G) A) and B)

Question 12

Forests help to regulate the global climate by

Accepted Answer

A)   releasing oxygen.
B)   absorbing carbon dioxide.
C)   preventing soil erosion.
D)   absorbing pollutants.
E)   emitting ozone.F) A) and C)
G) None of the above

Question 13

Which of the following is a major drawback of dams?

Accepted Answer

A)   saltwater intrusion
B)   providing irrigation water
C)   sediment buildup
D)   depletion of aquifers
E)   deforestation of nearby landsF) A) and D)
G) A) and C)

Question 14

More sparse urban settlement patterns may help conserve energy and preserve the environment.

Accepted Answer

A) True 
 B)False

Question 15

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) B) and E)
G) B) and D)

Question 16

A disproportionately large percentage of resources in more developed countries (MDCs) goes to

Accepted Answer

A)   growing crops.
B)   providing water.
C)   growing livestock.
D)   cleaning sewage.
E)   pest and weed control.F) B) and D)
G) C) and D)

Question 17

In which ways does overfishing lead to decreased biodiversity?

Accepted Answer

A)   It reduces the available habitat available 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) C) and D)

Question 18

One of the goals of conservation biology is to develop new scientific concepts that can be applied to our lives.

Accepted Answer

A) True 
 B)False

Question 19

The Canada lynx (Lynx canadensis) is currently listed as an endangered species.Which of the following would play the greatest role in removing the lynx from the endangered species list.

Accepted Answer

A)   Creating a law that bans the development and use of roads for snowmobiling and skiing in the lynx habitat.
B)   Pass a law that restricts hunting of lynx.
C)   Increase the amount of available prey for the lynx.
D)   Establish limits on the amount of timber that can be harvested from the forests that the lynx use as their habitat.
E)   Remove any potential competitors (i.e., wolves and coyotes)  from the lynx habitat to increase the amount of resources available for the lynx.F) B) and E)
G) B) and C)

Question 20

Which of the following human behaviors is considered sustainable?

Accepted Answer

A)   The use of the sun in order to produce a readily available form of energy.
B)   Consumption of meat by people in the United States.
C)   The use of fossil fuels as our primary form of energy.
D)   Mining, processing, and use of minerals for everyday products.
E)   Modern agricultural practices that require large amounts of fertilizers.F) D) and E)
G) B) and C)

Exam 32: Human Impact on the Biosphere

Biodiversity increases the consumptive value of land,meaning that

Correct AnswerverifiedShow Answer

Which of the following is not an example of measures that may make urban environments sustainable?

Correct AnswerverifiedShow Answer

An accumulation of salts due to evaporation of irrigation water is called

Correct AnswerverifiedA

Which of the following practices would play the greatest role in reversing the loss of biodiversity on Earth?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Deforestation may contribute towards climate change because

Correct AnswerverifiedShow Answer

Which indirect value of biodiversity will have the greatest economical value to people?

Correct AnswerverifiedC

Wildlife management is a subfield of biology that supports conservation biology.

Correct AnswerverifiedShow Answer

Which of the following features would have the greatest influence in creating a more sustainable urban society?

Correct AnswerverifiedD

Before solar energy can become a competitive form of energy available for consumers,which of the following events must occur?

Correct AnswerverifiedShow Answer

Extensive irrigation may contribute to desertification because

Correct AnswerverifiedShow Answer

Forests help to regulate the global climate by

Correct AnswerverifiedShow Answer

Which of the following is a major drawback of dams?

Correct AnswerverifiedShow Answer

More sparse urban settlement patterns may help conserve energy and preserve the environment.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A disproportionately large percentage of resources in more developed countries (MDCs) goes to

Correct AnswerverifiedShow Answer

In which ways does overfishing lead to decreased biodiversity?

Correct AnswerverifiedShow Answer

One of the goals of conservation biology is to develop new scientific concepts that can be applied to our lives.

Correct AnswerverifiedShow Answer

The Canada lynx (Lynx canadensis) is currently listed as an endangered species.Which of the following would play the greatest role in removing the lynx from the endangered species list.

Correct AnswerverifiedShow Answer

Which of the following human behaviors is considered sustainable?

Correct AnswerverifiedShow Answer

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D

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