Under pressure from other species, it was a matter of life and death for every species to do all it could to adapt to its environment and develop ingenious reproductive strategies. This is the best entrée for understanding the concept of evolution.
在攸關族群存亡的壓力下，各物種都得使出渾身解數，因應環境而發展出各有巧妙的繁衍策略，因此也是瞭解演化的最佳切入點。