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Exam 43: Conservation Biology and Global Change

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Question 1

Multiple Choice

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How can human-caused environmental changes create problems for selecting a site for a preserve?

A) Nutrient enrichment prevents preserves from being connected by corridors.
B) The site's environmental conditions may change because of climate change.
C) Global warming makes all climates less suitable for maintaining high diversity.
D) Only lands that are not useful to human activities are available for preserves.

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Question 2

Multiple Choice

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Which of the following will have the most effect on species biodiversity in the future?

A) presence of invasive zebra mussels in Lake Michigan
B) prolonged industrial mercury runoff into Lake Ontario
C) oil and gas pipeline construction in tropical rain forests
D) reduced water supply downstream due to a dam in China

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C

Question 3

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Figure 42.3 Use the graph in Figure 43.3 and the information provided in the paragraph below to answer the following questions. Flycatcher birds that migrate from Africa to Europe feed their nestlings a diet that is almost exclusively moth caterpillars.The graph in Figure 43.3 shows the mean (peak) dates of bird arrival,bird hatching,and caterpillar season for the years 1980 and 2000. -The shift in the peak of caterpillar season between 1980 and 2000 is most likely due to

Which of the following species was driven to extinction by overharvesting by hunters/fishermen?

The use of DDT as an insecticide in the United States has been outlawed since 1971,yet it is still a problem for certain top-level carnivores in the United States.Which of the following terms best explains this apparent incongruity?

Which of the following best illustrates human efforts to improve environmental sustainability?

The main goal of sustainable development is to

Biodiversity hot spots are not necessarily the best choice for nature preserves because

Suppose you attend a town meeting at which some experts tell the audience that they have performed a cost-benefit analysis of a proposed transit system that would probably reduce overall air pollution and fossil fuel consumption.The analysis,however,reveals that ticket prices will not cover the cost of operating the system when fuel,wages,and equipment are taken into account.As a biologist,you know that if ecosystem services had been included in the analysis,the experts might have arrived at a different answer.Why are ecosystem services rarely included in economic analyses?

The scientist finds that the heavy metal concentration in the insect-eating birds of a fragment does not depend on the relative amount of edge habitat of that fragment.Which of the following describes how experimental error may have influenced the results?

How is habitat fragmentation related to biodiversity loss?

If the sex ratio in a population is significantly different from 50:50,then which of the following will always be true?

Which of the following examples poses the greatest potential threat to biodiversity?

The introduction of the brown tree snake in the 1940s to the island of Guam has resulted in

What is caused by excessive nutrient runoff into aquatic ecosystems?

Relatively small geographic areas with high concentrations of endemic species and a large number of endangered and threatened species are known as

Your friend is wary of environmentalists' claims that climate change could lead to major biological change on Earth.Which of the following statements should you use to support the biological predictions associated with climate change?

Of the following statements about protected areas that have been established to preserve biodiversity,which one is the most correct?

If global warming continues at its present rate,which biomes will likely take the place of the coniferous forest (taiga) ?

Which of the following best explains the reduction in human population growth rates over the past four decades?