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Which of the following, if true, would most help to explain the greater effect of zander on the native fish population?
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Which of the following best describes the function of the highlighted sentence?
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In the context in which it appears, “conveying” most nearly means
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According to the passage, researchers concluded that fever in honeybee colonies is preventative because their study showed that such fever
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The passage implies that if hive temperature had not returned to normal by the end of the study in question, a probable conclusion of the researchers would have been that
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According to the passage, which of the following is true of chalk brood infection among honeybee larvae ?
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The Labrador duck is one of the most _____ extinct birds: although there are a fair number of specimens, few have yielded reliable data and little is known about the species' breeding patterns.
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In a field of egotists, Bloomfield is _____, often praising her competitors and punctuating her correspondence with self-deprecating remarks.
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Unlike some mammals—cows and sheep, for instance—that are notably _____, lions have a wide range of facial expressions.
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At first, most of the famous fairy tales seem so implausible and so irrelevant to contemporary life that their _____ is hard to understand.
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Motivation is the hardest of all managerial tasks, and it is _____ to expect a single memo, no matter how well crafted, to have much effect on the staff's attitude.
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Few studies have been published on ground-squirrel dispersal, and most of them have involved very small sample sizes, thus most statement regarding ground-squirrel dispersal must be considered _____.
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Although its director _____ that the movie uses a documentary approach in portraying the famous sit-down strike, in practice its characters are heavily fictionalized and fall into familiar Hollywood types.
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There is frequently a protracted time interval between the introduction of an innovative musical composition and its public acceptance; the concert-going public often spurns the _____ in favor of the familiar for a prolonged period.
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If newspaper consumers are concerned about more than (i)_____ and prefer to read news that is consistent with their beliefs, then (ii)_____ is not a journalistic flaw, but, rather, a cultivated feature. In a competitive news market, producers can use slant to differentiate their products and stave off price competition.
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The characters in this comic strip fret about the (i)_____ of their “little counterculture lives”, especially when terrible things are happening in the world, but the cartoonist makes their lives (ii)_____ in ways that do not seem (iii)_____ at all. Real things happen here—births, deaths, adoptions, affairs, breakups, commitments, ceremonies, civil union—and they matter.
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A plant-based automobile fuel has just become available in Ternland. A car can be driven as far on a gallon of the new plant-based fuel as a car can be driven on a gallon of gasoline, but a gallon of the plant-based fuel both costs less and results in less pollution. Therefore, drivers in Ternland who switch to it will reduce the amount they spend on fuel in a year while causing less environmental damage.
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Which of the following is an assumption on which the argument relies?
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Although many hypotheses have been proposed to explain why some plant communities are more susceptible than others to invasion by nonnative species, results from field studies have been inconsistent and no general theory of invasibility has yet emerged. However, a theory based on fluctuating resource availability could integrate most existing hypotheses and successfully resolve many of the apparently conflicting and ambiguous results of previous studies. The suggested theory is that a plant community becomes more susceptible to invasion whenever there is an increase in the amount of unused resources.
The diversity in the range of resource-release mechanisms could partly explain the absence of consistent ecological correlates of invasibility. In particular, the theory predicts that there will be no necessary relationship between the species diversity of a plant community and its susceptibility to invasion, since near-complete exploitation can each occur in both species-rich and species-poor communities. Though Lonsdale found a positive association between species richness and invasion, this may arise from the tendency of diverse plant communities to be nutrient poor and therefore more responsive to the effects of human-caused influxes of nutrients.
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The passage is primarily concerned with
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