First, I'd like to talk about some discoveries that have challenged one of these fundamental assumptions about what you need in order to have a biologicalcommunity.
首先，我想谈谈一些发现，它们挑战了建立生物群落必需条件的基本假设之一。
2
The first and the third can be key factors in the structure of a biologicalcommunity; that is, all the populations of organisms living together and potentially interacting in a particular area.