What characterizes Darwinian theory is its attention to the processes by which one species transforms into another; "adaptation" as a key principle in explaining the relationship between a species and its environment; and "natural selection" as a mechanism of change.
足以描寫达尔文理论的特性的是，它關注某个物种轉变成另一个物種的“过程”；“适应”是解释某一物种及其环境间关系的关键法则；以及“自然选择”做为一个轉变机制。