Regarding research on fish, it can be inferred from the passage that
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Which of the following can be inferred about the study by Chapman, Ward, and Krause?
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The passage suggests that biologists who say egg production in birds is biologically highly costly would agree that clutch size is determined primarily by
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The passage suggests that Lack would agree with which of the following statements about factors affecting clutch size in birds?
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An alarming number of Mediterranean monk seals, an endangered species, have recently died. Postmortem analysis showed the presence of an as yet unidentified virus, as well as evidence of a known bacterial toxin. Seawater samples from the area where the seals died did contain unusually high concentrations of the toxic bacterium. Therefore, although both viruses and bacterial toxins can kill seals, it is more likely that these deaths were the result of the bacterial toxin.
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Which of the following, if true, provides additional evidence to support the conclusion?
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Which of the following, if true, provides the strongest support for the argument given?
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Which of the following is an assumption on which the argument relies?
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