Analyze the graph and identify some factors that may contribute to the rotifer population leveling off in the absence of water fleas. Explain your answer in 1–2 sentences.

One factor that may contribute to the rotifer population leveling off in the absence of water fleas could be competition for resources such as food. With fewer water fleas to feed on, the rotifer population may reach its carrying capacity with the available resources in the environment. Additionally, predation from other organisms or limited availability of suitable habitat may also play a role in the stabilization of the rotifer population.