❓ 문제 According to the passage, why is the keystone species concept considered important for conservation biology?
- A. A) It provides a way to identify all species that are essential for ecosystem functioning.
- B. B) It suggests that protecting one key species could protect the entire ecosystem.
- C. C) It is the only method for measuring species abundance in an ecosystem.
- D. D) It eliminates the need for controlled removal experiments in ecological research.