❓ Câu hỏi According to the passage, what was the main finding of Robert Paine's experiments with the starfish *Pisaster ochraceus*?
- A. A) The removal of the starfish increased the abundance of mussels but had no effect on overall species diversity.
- B. B) The removal of the starfish caused a decline in species diversity because mussels outcompeted other organisms.
- C. C) The starfish directly consumed all mussels, leading to an increase in the diversity of other species.
- D. D) The starfish had a negligible impact on community structure due to its low abundance.