Predators play a crucial role in controlling prey populations within ecosystems. By preying on certain species, predators help regulate the abundance of prey populations, preventing them from overpopulating and potentially causing imbalances in the ecosystem. This process is known as top-down control, where predators influence the distribution and behavior of prey species, ultimately shaping the overall structure and dynamics of the ecosystem. Additionally, the presence of predators can also lead to adaptations in prey species, such as changes in behavior, morphology, or habitat use, as a means of avoiding predation pressure.