❓ Câu hỏi According to the passage, which of the following best explains why the removal of Pisaster ochraceus reduced biodiversity?
- A. A) The starfish was a primary producer that supported multiple trophic levels.
- B. B) Its absence allowed mussels to dominate, outcompeting other species.
- C. C) The starfish facilitated the growth of algae by preying on herbivores.
- D. D) Its removal led to an increase in the population of fig trees.