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题目选项分析

In 1995, ecologists started to reintroduce the wolf into Yellowstone Park, where the wolf had been eliminated intentionally half a century earlier. Rangers expected a rise in the number of wolf would place limits on the elk population and on the populations of many mid-size mammals. One unexpected consequence was a dramatic rise in the population of foxes, which in turn helped to control many rodent populations.

Which of the following, if true, most helps explain the dramatic rise in the fox population?

【选项】In the agricultural counties surrounding Yellowstone, there are significantly lower wolf and fox populations.

选项是否正确?

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题目基本信息

  • 所属科目:逻辑CR
  • 题目来源1:Magoosh-145
难度:易