今天存在的物种的后代将继续组成所有未来生态系统 — — 它们形成于人类或地球过程形成奇特的条件时 — — 因此，拥有更多种类的物种是一个明显的优势。
Since the descendants of today’s living species will go on to comprise all future ecosystems – formed when humans or planetary processes generate novel conditions – there is a clear advantage to having more kinds of them.