Question 1

How are greenhouse gases suspected of causing climate warming?

Accepted Answer

A)   Greenhouse gases absorb solar energy and re-emit it into space before it can reach the Earth's surface.
B)   Infrared energy from space is absorbed by greenhouse gases in the upper atmosphere, which then re-emitThe heat toward the surface of the Earth, causing the climate to warm.
C)   Greenhouse gases block solar energy from entering the lower level of the atmosphere.
D)   Greenhouse gases prevent radiation of infrared energy back into space, trapping the heat near the Earth's surface and causing the climate to warm.
E)   Solar energy is absorbed by greenhouse gases in the upper atmosphere and re-emitted toward the Earth's surface as heat, causing the climate to warm.F) B) and D)
G) A) and B)

Question 2

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) A) and C)
G) A) and E)

Question 3

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) A) and B)
G) None of the above

Question 4

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)   create 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 lynxF) A) and D)
G) A) and C)

Question 5

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) C) and E)

Question 6

Which subfield does not directly support conservation biology?

Accepted Answer

A)   chemistry
B)   genetics
C)   ecology
D)   wildlife management
E)   field biologyF) A) and E)
G) A) and B)

Question 7

Deforestation may contribute toward 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) A) and C)
G) A) and B)

Question 8

Growing livestock is more sustainable than growing crop plants.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is not a benefit of biodiversity?

Accepted Answer

A)   development of novel medicines
B)   production of freshwater
C)   new and better crop plants
D)   climate regulation
E)   biological magnificationF) A) and C)
G) C) and D)

Question 10

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) B) and E)

Question 11

Some rivers have been dammed under the guise of flood control. What might be an unintended consequence of using this approach?

Accepted Answer

A)   saltwater intrusion into the aquifer
B)   reduced fertility of downstream land due to reduced silt deposits
C)   more frequent rainfall
D)   deforestation of land downstream due to reduced silt deposits
E)   increased rainfall due to increased water evaporationF) B) and C)
G) A) and D)

Question 12

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 13

Preserving biodiversity can increase the value of land and the resources extracted from it.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following has not contributed to declines in the world fish catch in recent years?

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) All of the above
G) C) and D)

Question 15

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

Question 16

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) C) and D)
G) B) and D)

Question 17

Which of the following are 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 B)
G) B) and D)

Question 18

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) A) and D)
G) C) and D)

Question 19

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) A) and B)
G) None of the above

Question 20

Which of the following is not a renewable resource?

Accepted Answer

A)   fossil fuels
B)   food crops
C)   water
D)   wild game
E)   solar energyF) C) and E)
G) A) and D)

Exam 32: Human Impact on the Biosphere

Growing livestock is more sustainable than growing crop plants.

Correct AnswerverifiedShow Answer

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

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Which of the following are greenhouse gases?

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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

Deforestation may contribute toward climate change because

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following has not contributed to declines in the world fish catch in recent years?

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

Which subfield does not directly support conservation biology?

Correct AnswerverifiedShow Answer

Some rivers have been dammed under the guise of flood control. What might be an unintended consequence of using this approach?

Correct AnswerverifiedShow Answer

How are greenhouse gases suspected of causing climate warming?

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Which of the following is not a renewable resource?

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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

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

Correct AnswerverifiedShow Answer

Preserving biodiversity can increase the value of land and the resources extracted from it.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Multipurpose trees are useful for what purpose?

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 a major drawback of dams?

Correct AnswerverifiedShow Answer

Which of the following is not a benefit of biodiversity?

Correct AnswerverifiedShow Answer

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