Thus the smoothness of tropical or benthic environments allows species there to relinquish the need to adapt in physiological ways and allows them room to adapt in purely biological ways.

• 因此，热带或洋底的平和环境允许那里的物种放弃以改变生理机能的方式适应环境的需要，并给它们留下以单纯的生物方式适应环境的空间。