❓ Question According to the passage, which of the following best illustrates the original keystone species concept as demonstrated by Robert Paine?
- A. The removal of a top predator leads to a decrease in species diversity due to competitive exclusion by a dominant prey species.
- B. The introduction of a non-native species can outcompete native species and reduce overall biodiversity.
- C. Species with high biomass are always the most influential in determining community structure.
- D. The removal of any single species from an ecosystem will inevitably cause a collapse of the entire community.