The term for a mutual relationship between two different species is symbiosis. This interaction can take various forms, including mutualism, where both species benefit; commensalism, where one species benefits while the other is unaffected; and parasitism, where one species benefits at the expense of the other. Symbiotic relationships are integral to ecosystem dynamics, influencing species survival, reproduction, and biodiversity. Examples include bees pollinating flowers (mutualism) and ticks feeding on mammals (parasitism).