Need help in this question Which of the following statements about trophic cascades is TRUE? A trophic cascade occurs when predation limits herbivore abundance, and plant population sizes are reduced....

Which of the following statements about trophic cascades is TRUE? A trophic cascade occurs when predation limits herbivore abundance, and plant population sizes are reduced. A trophic cascade occurs when a predator is removed, allowing plants to expand, which then limits herbivores. In a trophic cascade plant abundance is independent of the number of trophic levels in the community. A behavioral cascade, which often involves the perception of predation risk, is a type of trophic cascade.