The process of succession and the stability of a climax community can change over time. A. The changes that occur in an ecosystem from the pioneer to the climax community can be seen in one human generation. B. A high degree of species diversity does not always result in a stable ecosystem. C. The level of resilience in a plant community contributes to its long-term stability. D. Ecologists agree that climax communities are the most stable types of ecosystems. E. Disagreements over the meaning of the term "stability" make it difficult to identify the most stable ecosystems. F. The resilience of climax communities makes them resistant to destruction caused by humans.