Question 1

Forests and other natural ecosystems,such as wetlands,exhibit the "sponge effect," meaning that they

Accepted Answer

A)   soak up water from runoff and rainfall, and thus accumulate pollutants.
B)   soak up water from runoff and rainfall, releasing it at a regular rate that moderates flooding of streams and rivers.
C)   soak up pollutants from runoff and rainfall, releasing it quickly into streams and rivers and raising their levels.
D)   draw water away from rivers and streams, lowering their levels.
E)   soak up water from runoff and rainfall, saturating nearby ecosystems.F) B) and E)
G) A) and B)

Question 2

Synthetic organic compounds such are chlorofluorocarbons (CFCs)are damaging to the world's fresh water supply.

Accepted Answer

A) True 
 B)False

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

The increased efficiency of fishing has led to

Accepted Answer

A)   loss of biodiversity in fish and other species.
B)   decreased yields from fishing.
C)   increased biodiversity of aquatic animals other than fish.
D)   increased nutritional deficiencies in the human population.
E)   decreased need for agriculture.F) A) and C)
G) B) and E)

Question 5

Mercury can enter an aquatic food chain and collect in fish as well as people who eat fish.This is an example of which of the following processes?

Accepted Answer

A)   biotic potential
B)   biological magnification
C)   salinization
D)   bioremediation
E)   biological accumulationF) C) and D)
G) A) and C)

Question 6

Which of the following are suspected "greenhouse gases"?

Accepted Answer

A)   carbon dioxide and oxygen
B)   oxygen and methane
C)   methane and carbon dioxide
D)   nitrogen and carbon dioxide
E)   oxygen and nitrogenF) A) and E)
G) All of the above

Question 7

Most of the world's fresh water 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) A) and C)
G) B) and C)

Question 8

Which of the following is an example of pollution?

Accepted Answer

A)   Turkeys enter a field and eat some of the seeds scattered on the ground.
B)   A heavy rain occurs, resulting in some ponding of water.
C)   Small amounts of iron leach from rocks in a stream bed, increasing the amount of dissolved iron in the water.
D)   Leftover minerals from ores are left along a stream bed, allowing leftover traces of the mineral to run off into the stream after heavy rains.
E)   Deer cross a stream, disturbing the sand and silt on the stream bed, making the water muddy and cloudy.F) A) and E)
G) C) and E)

Question 9

Which of the following activities will help make rural societies more sustainable?

Accepted Answer

A)   Plant multipurpose trees.
B)   Design energy efficient forms of transportation.
C)   Create greenbelts.
D)   Improve storm water management.
E)   Promote sustainability by encouraging the recycling of business equipment.F) C) and D)
G) B) and E)

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

Which of the following activities does not contribute to beach erosion?

Accepted Answer

A)   construction of groynes
B)   filling in of wetlands for farming
C)   dumping of sewage from coastal cities into the ocean
D)   use of seawalls to protect cities from hurricane storm surges
E)   rising sea levelsF) B) and D)
G) A) and C)

Question 13

Conservation biology supports all of the following ethical principles EXCEPT

Accepted Answer

A)   all animals have the same rights or legal status as humans.
B)   biodiversity is desirable for the biosphere and humans.
C)   biodiversity has value in and of itself regardless of any practical benefit to humans.
D)   extinction due to human actions are undesirable.
E)   the complex interactions of ecosystems support biodiversity and are desirable.F) A) and B)
G) B) and D)

Question 14

Multipurpose trees are useful for what purpose?

Accepted Answer

A)   improved pest control, as well as serving as a windbreak
B)   water conservation and improved pest control
C)   providing additional products, as well as serving as a windbreak
D)   restoring wetlands and improving soil quality
E)   providing fossil fuel sources and assisting with irrigationF) B) and D)
G) A) and E)

Question 15

Which of the following methods may help conserve water by reducing the amount used for agriculture?

Accepted Answer

A)   polyculture
B)   construction of dams for irrigation needs
C)   biological pest control
D)   contour with no-till farming
E)   reducing pesticide and fertilizer usageF) B) and E)
G) A) and B)

Question 16

The world today derives the majority of its energy from which of the following sources?

Accepted Answer

A)   coal and oil
B)   hydropower and nuclear power
C)   hydropower
D)   nuclear power
E)   wind and solar powerF) A) and B)
G) D) and E)

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

Pollution is defined as

Accepted Answer

A)   an alteration in land usage.
B)   an undesirable alteration to the environment.
C)   the impact of human activity on the environment.
D)   the impact of animal and plant species on the environment.
E)   the introduction of a new species into an environment.F) C) and D)
G) A) and E)

Question 19

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 are consuming land and resources more quickly than they can be replenished.
C)   recycling has lessened the need for the mining of some mineral resources.
D)   fresh water is a renewable resource that can be preserved through conservation.
E)   diverting agricultural yield for feeing livestock supplies protein to a community's diet.F) A) and D)
G) A) and C)

Question 20

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) A) and E)
G) A) and B)

Exam 32: Human Impact on the Biosphere

Forests and other natural ecosystems,such as wetlands,exhibit the "sponge effect," meaning that they

Correct AnswerverifiedShow Answer

Which of the following is an example of pollution?

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Human society in its current form is unsustainable because

Correct AnswerverifiedShow Answer

Which of the following methods may help conserve water by reducing the amount used for agriculture?

Correct AnswerverifiedShow Answer

The increased efficiency of fishing has led to

Correct AnswerverifiedShow Answer

The world today derives the majority of its energy from which of the following sources?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Synthetic organic compounds such are chlorofluorocarbons (CFCs)are damaging to the world's fresh water supply.

Correct AnswerverifiedShow Answer

Pollution is defined as

Correct AnswerverifiedShow Answer

Which of the following activities does not contribute to beach erosion?

Correct AnswerverifiedShow Answer

Which of the following activities will help make rural societies more sustainable?

Correct AnswerverifiedShow Answer

Multipurpose trees are useful for what purpose?

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Most of the world's fresh water supply is used for

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Conservation biology supports all of the following ethical principles EXCEPT

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Mercury can enter an aquatic food chain and collect in fish as well as people who eat fish.This is an example of which of the following processes?

Correct AnswerverifiedShow Answer

Which of the following are suspected "greenhouse gases"?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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