The author ultimately abandons the language of "extinction" in favor of "selection." Which of the following best explains why this shift is necessary to the integrity of the argument?

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Which of the following, if true, would most seriously undermine the essay's broader philosophical conclusion while leaving most of its factual observations intact?

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Which of the following assumptions is most necessary for the author's argument?

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Suppose a critic argues that "one cannot extinguish what never existed." Which response would most strongly support the author's position?

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The Largest Extinction Event Is Happening Right Now