每日口說挑戰 你手上的這條筋其實完全無用？看看我們身上的演化證據吧 (Proof of evolution that you can find on your body)

今日挑戰句子

Look closely and you’ll see parts that aren’t there because you need them but because your animal ancestors did. No longer serving their previous function but not costly enough to have disappeared, these remnants of our deep history only make sense within the framework of evolution by natural selection.

你仔細看看就會發現有些毫無用處的身體部位是因應動物祖先的需求而存在。雖然這些部位跟以往的功能不同，但也不至於完全消失。我們深厚歷史下的這些遺跡在物競天擇的進化論下有跡可循。