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The primary purpose of the passage is to
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The author of the passage suggests that Mary McCarthy`s writing is characterized by
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Some archaeologists speculate that the Americas might have been initially colonized between 40,000 and 25,000 years ago. However, to support this theory it is necessary to explain the absence of generally accepted habitation sites for that time interval in what is now the United States. Australia, which has a smaller land area than the United States, has many such sites, supporting the generally accepted claim that the continent was colonized by humans at least 40,000 years ago. Australia is less densely populated (resulting in lower chances of discovering sites) and with its overall greater aridity would have presented conditions less favorable for hunter-gatherer occupation. Proportionally, at least as much land area has been lost from the coastal regions of Australia because of postglacial sea-level rise as in the United States, so any coastal archaeological record in Australia should have been depleted about as much as a coastal record in the United States. Since there are so many resource-rich rivers leading inland from the United States coastlines, it seems implausible that a growing population of humans would have confined itself to coasts for thousands of years. If inhabitants were present 25,000 years ago, the chances of their appearing in the archaeological record would seem to be greater than for Australia.
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The passage is primarily concerned with doing which of the following?
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The author of the passage implies which of the following about 25,000 years ago?
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The author of the passage implies that, in what is now the United States, archaeological evidence of inhabitation in the period from 40,000 to 25,000 years ago is lacking because that region is
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In the passage, the function of the highlighted portion( in yeast and worms, metabolism is both sped up and altered) is to
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The passage implies which of the following about the explanation mentioned in the highlighted text(This phenomenon was long attributed to a simple slowing of metabolism)?
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It can be inferred that the author of the passage mentions the efficiency with which gray squirrels forage primarily in order to
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