The term for the balance in an ecosystem where species coexist is known as ecological equilibrium or equilibrium community. This balance involves the stable interaction of different species, including both predators and prey, allowing them to maintain their populations over time. Equilibrium is influenced by various factors, including resource availability, environmental conditions, and species interactions such as competition and symbiosis. When an ecosystem is in equilibrium, it generally exhibits resilience to disturbances and can effectively recover from changes, contributing to overall biodiversity and ecosystem health.