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Rainwater contains hydrogen of a heavy form called deuterium. The deuterium content of wood reflects the deuterium content of rainwater available to trees during their growth. Wood from trees that grew between 16,000 and 24,000 years ago in North America contains significantly more deuterium than wood trees growing today. But water trapped in several North American caves that formed during that same early period contains significantly less deuterium than rainwater in North America today.

Which of the following, if true, most helps to reconcile the two findings?

【选项】Industrialization in North America over the past 100 years has altered the deuterium content of rain.

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:OG17-587
  • 题目来源2:OG18-586
  • 题目来源3:OG19-583
  • 题目来源4:OG20-669
正确率:59% 中等