When a tree first starts growing in a certain area, it's likely that the 27 climatic envelope—the temperature, humidity, rainfall patterns and so on—suits it.
2016年12月六级真题（第一套）阅读 Section A
柯林斯高阶英汉双解学习词典释义
ADJ
气候的;与气候有关的
Climatic conditions, changes, and effects relate to the general weather conditions of a place.