TOEFL Listening: TPO-TOEFL阅读TPO - WCTTK_9C0EJ4L2VCN$

According to paragraph 4, which of the following is true of climax communities? A. They are more resilient than pioneer communities. B. They can be considered both the most and the least stable communities. C. They are stable because they recover quickly after major disturbances. D. They are the most resilient communities because they change the least over time.