The primary way that species interact within an ecosystem is through interdependence. Species form complex relationships, including predation, competition, and symbiosis. In predation, one species (the predator) hunts another (the prey) for food. Competition occurs when species vie for the same resources, such as food, space, or mates. Symbiotic relationships include mutualism, commensalism, and parasitism, where organisms benefit from one another or interact in other ways. These interactions are fundamental to maintaining ecosystem balance.