Chapter 5 Chapter Quiz

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. Refer to the figure.
 

 
The three factors shown in the graphs provide evidence supporting the hypothesis that CO₂ emissions by humans are associated with rising atmospheric CO₂ and temperature. The graphs support the hypothesis because all three factors are

measured within the atmosphere. correct incorrect

measured indirectly. correct incorrect

rising at approximately the same rate. correct incorrect

rising at very slight, insignificant rates. correct incorrect

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. Which of these examples represents an impact of climate change on a living system?

The hottest year so far in the historical record was 2016. correct incorrect

Arctic sea ice reached a record low in 2017. correct incorrect

Extreme weather events such as hurricanes and snowstorms are increasing. correct incorrect

The ranges of European butterflies are moving north as global temperatures rise. correct incorrect

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. At atmospheric temperatures rise, concurrent rises occur in ocean temperatures. In addition, excess atmospheric CO₂ enters the oceans and dissolves to form carbonic acid, which increases ocean acidity. As these processes continue, what is the likely future impact on the world’s coral reefs?

No likely impact; these processes do not impact corals. correct incorrect

More reefs will die due to bleaching as temperature and acidity rise. correct incorrect

Reefs will die off in the short term but will recover and adapt to the new acidity levels. correct incorrect

Reef health will improve, and growth will increase as temperature and acidity increase. correct incorrect

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. Which of these human activities results in overexploitation and is most likely to occur in poor economies?

Hunting for bushmeat correct incorrect

International wildlife trade correct incorrect

Listing of endangered species on CITES correct incorrect

Restrictions on exploiting common property areas correct incorrect

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. Two conservationists disagree over whether the number given by CITES for the total number of a species of frog exported from a South American rain forest represent an overestimate or an underestimate. Which of these situations is likely to result in an underestimate?

Some frogs have been re-exported several times and were counted each time. correct incorrect

Poor identification has led to several species being combined in the count. correct incorrect

Counts were based on permits granted, but not all permit owners exported frogs. correct incorrect

The count included both whole frogs and frog legs; each single leg was counted as one frog. correct incorrect

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. A student is writing an essay trying to make a scientific argument that commercial whaling of all whale species should be banned. Which of these statements best supports her argument?

Northern right and blue whale populations are far below their original numbers. correct incorrect

Most whales are not currently on the endangered species list. correct incorrect

Several coastal countries hunt whales as part of their culture. correct incorrect

Numbers of most whale species have recovered since the 1986 whaling ban. correct incorrect

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. The black rat is one of the first invasive species. It originated in tropical Asia, reached Europe in the first century CE, and spread around the world, hiding on European ships. This animal became an invasive species through which of these methods or sources?

European colonization correct incorrect

Accidental transport correct incorrect

Biological control correct incorrect

Agriculture/horticulture/aquaculture correct incorrect

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. In Cuba, dogs are considered an invasive species. In Florida, 90 miles away, they are not. Why might dogs be more damaging to Cuban ecosystems than to Florida ecosystems?

Cuba is south of Florida; it is more tropical and its ecosystems more fragile. correct incorrect

Cuba is smaller than Florida; it has less room to maintain new species. correct incorrect

Cuba’s native species are trapped on an island and less adapted to withstand invaders. correct incorrect

Dogs are better able to survive in Cuba than in Florida, thus they pose a greater risk there. correct incorrect

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. Scientists are most alarmed by which characteristic of GMOs?

Their ability to form crossovers between unrelated species correct incorrect

Their ability to become toxic if allowed to grow wild correct incorrect

Their ability to increase crop productivity correct incorrect

Their ability to become the source of new medicines correct incorrect

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. Scientists hope to decrease the incidence of white nose syndrome (WNS) in populations of bats in a fairly unpopulated region of the northeast United States. Which of these approaches would be most likely to result in decreasing WNS?

Capture the bats and bring all of them to live into a laboratory setting while treating WNS. correct incorrect

Close more isolated bat caves, forcing all bats to roost in more accessible caves, where they can be more easily treated. correct incorrect

Bring as many bats as possible into zoos and wildlife refuges, where they will have more contact with other species and less contact with other bats. correct incorrect

Prevent tourists from entering bat caves, and allow in only scientists with sterilized clothes and equipment. correct incorrect