Question 1

Protecting habitat for buffalo and wildebeests is challenging because

Accepted Answer

A)   they have a very large range.
B)   they undergo large-scale movements.
C)   there may not be enough contiguous habitat to meet their requirements.
D)   All of the above.

Question 2

Biotic _____ is the process by which unique species compositions originally found in different regions slowly become more similar as a result of the movement of people, cargo, and species.

Accepted Answer

A)   normalization
B)   confluence
C)   magnification
D)   homogenization

Question 3

Flood control is an example of a ____ service.

Accepted Answer

A)   provisioning
B)   cultural
C)   regulating
D)   supporting

Question 4

The time required for a chemical to break down to half of its original concentration is called its

Accepted Answer

A)   decomposition coefficient.
B)   retention time.
C)   half-life.
D)   decontamination time.

Question 5

In a food chain that undergoes biomagnification of a pesticide, which organism can expected to have the highest pesticide concentration?

Accepted Answer

A)   algae
B)   carnivorous fish
C)   zooplankton
D)   herbivorous fish

Question 6

What is the process by which the concentration of a contaminant increases as it moves up the food chain?

Accepted Answer

A)   bioexpansion
B)   bioconcentration
C)   biomagnification
D)   bioaccumulation

Question 7

How has agriculture led to losses of genetic diversity? Why is this a problem?

Accepted Answer

Modern livestock operations favour relat...

Question 8

In addition to increasing temperature, global climate change is predicted to

Accepted Answer

A)   cause extreme weather events.
B)   alter precipitation patterns.
C)   shift distributions of species.
D)   All of the above

Question 9

All species of moas (Dinornis)  in New Zealand have gone extinct as a result of

Accepted Answer

A)   habitat loss.
B)   overharvesting.
C)   invasive species.
D)   pollution.

Question 10

A supporting service provides benefits of biodiversity that

Accepted Answer

A)   have aesthetic, spiritual, or recreational value.
B)   humans use.
C)   include climate regulation, flood control, and water purification.
D)   allow ecosystems to exist.

Question 11

The carbon-sequestering ability of tropical rainforests is an example of a ____ service.

Accepted Answer

A)   regulating
B)   provisioning
C)   cultural
D)   supporting

Question 12

In the calculation of half-life, N0 represents

Accepted Answer

A)   the final amount of the contaminant.
B)   the initial amount of the contaminant.
C)   the elapsed time.
D)   the half-life.

Question 13

Cultural services are those that

Accepted Answer

A)   humans use, including lumber, fur, meat, crops, water, and fibre.
B)   allow ecosystems to exist, such as primary production, soil formation, and nutrient cycling.
C)   include climate regulation, flood control, and water purification.
D)   provide aesthetic, spiritual, or recreational value.

Question 14

During the past 500 years, _____ of mammal species have gone extinct.

Accepted Answer

A)   10 percent
B)   0.2 percent
C)   5 percent
D)   1.4 percent

Question 15

The goal in protecting a habitat is commonly the preservation of a large enough area to support a _____ population.

Accepted Answer

A)   maximum sustaining
B)   minimum sustaining
C)   maximum viable
D)   minimum viable

Question 16

How many mass extinctions have occurred?

Accepted Answer

A)   5
B)   15
C)   10
D)   3

Question 17

The half-life of a contaminant is calculated as

Accepted Answer

A)   ln(N0 ÷ Nt)  ÷ t ln(2) .
B)   ln(N0 × Nt)  ÷ t ln(2) .
C)   t ln(2)  ÷ ln(N0 × Nt) .
D)   t ln(2)  ÷ ln(N0 ÷ Nt) .

Question 18

Why has it been challenging to determine the declines in species diversity of amphibians?

Accepted Answer

Amphibians are not as visible as other t...

Question 19

Which chemical caused declines in predatory bird populations in the 1950s and 1960s in the United States?

Accepted Answer

A)   DDT
B)   Alar
C)   organophosphates
D)   pyrethroids

Question 20

A review of research in Europe demonstrated that species richness is

Accepted Answer

A)   positively related to aboveground biomass.
B)   negatively related to aboveground biomass.
C)   positively related to genetic diversity.
D)   negatively related to genetic diversity.

Exam 23: Global Conservation of Biodiversity

Protecting habitat for buffalo and wildebeests is challenging because

Correct AnswerverifiedShow Answer

The half-life of a contaminant is calculated as

Correct AnswerverifiedShow Answer

Cultural services are those that

Correct AnswerverifiedShow Answer

Flood control is an example of a ____ service.

Correct AnswerverifiedShow Answer

Which chemical caused declines in predatory bird populations in the 1950s and 1960s in the United States?

Correct AnswerverifiedShow Answer

A review of research in Europe demonstrated that species richness is

Correct AnswerverifiedShow Answer

During the past 500 years, _____ of mammal species have gone extinct.

Correct AnswerverifiedShow Answer

All species of moas (Dinornis) in New Zealand have gone extinct as a result of

Correct AnswerverifiedShow Answer

The carbon-sequestering ability of tropical rainforests is an example of a ____ service.

Correct AnswerverifiedShow Answer

Biotic _____ is the process by which unique species compositions originally found in different regions slowly become more similar as a result of the movement of people, cargo, and species.

Correct AnswerverifiedShow Answer

In a food chain that undergoes biomagnification of a pesticide, which organism can expected to have the highest pesticide concentration?

Correct AnswerverifiedShow Answer

How has agriculture led to losses of genetic diversity? Why is this a problem?

Correct AnswerverifiedModern livestock operations favour relat...View AnswerShow Answer

The time required for a chemical to break down to half of its original concentration is called its

Correct AnswerverifiedShow Answer

In addition to increasing temperature, global climate change is predicted to

Correct AnswerverifiedShow Answer

In the calculation of half-life, N0 represents

Correct AnswerverifiedShow Answer

The goal in protecting a habitat is commonly the preservation of a large enough area to support a _____ population.

Correct AnswerverifiedShow Answer

How many mass extinctions have occurred?

Correct AnswerverifiedShow Answer

What is the process by which the concentration of a contaminant increases as it moves up the food chain?

Correct AnswerverifiedShow Answer

A supporting service provides benefits of biodiversity that

Correct AnswerverifiedShow Answer

Why has it been challenging to determine the declines in species diversity of amphibians?

Correct AnswerverifiedAmphibians are not as visible as other t...View AnswerShow Answer

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Modern livestock operations favour relat...
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In the calculation of half-life, N₀ represents

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Amphibians are not as visible as other t...
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