The beaks of finches in the Galapagos really do thicken over time in response to drought-induced changes in their food supply, just as Darwin predicted.

 
  • 加拉帕戈斯群岛上鸣禽的喙确实会像达尔文所预言的那样,随着时间的推移,为应对干旱而引起的食物供给的变化而变粗变厚。
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