We are clearly harmed if fish stocks dwindle to extinction. Less evidently, there are plants in the rain forest whose gene pool might be useful to us.
生物多样性是人类康乐和经济增长的关键因素。如果鱼类资源减少到灭绝边缘，对我们明显不利。不那么明显的是，热带雨林中有一些植物的基因库可能对我们有用。