Why does the professor say this: A: To emphasize the deadliness of a huge dust cloud. B: To show students the importance of the food chain. C: To describe the process of photosynthesis. D: To explain the sequence the extinctions occurred in.

The most effective way to prevent extinctions for the long term would be A: protecting the endangered species habitat B: capture breeding programs C: paying poachers to refrain from poaching D: removing the predators of endangered species E: instigating feeding programs for endangered species