self-extinction of arc

例句：

1. 1. The species' self-extinction is a natural process that cannotbe reversed.
   该物种的自我灭绝是一个自然过程，无法逆转。
2. 2. Theextinction of thedinosaurs was causedby the impact of a meteorite.
   恐龙的灭绝是由陨石撞击引起的。
3. 3.The self-extinction of thespecies is a stark reminder of thefragility of life on Earth.
   物种的自我灭绝是地球生命脆弱性的鲜明提醒。