Mutualism

n. interdependence as the ideal condition of social and individual well being (Philosophy)

Mutualism is a biological interaction between individuals of two different species, where both individuals derive a fitness benefit, for example increased survivorship. Similar interactions within a species are known as co-operation. Mutualism may be classified in terms of the closeness of association, the closest being symbiosis, which is often confused with mutualism. One or both species involved in the interaction may be , meaning they cannot survive in the short or long term without the other species. Though mutualism has historically received less attention than other interactions such as predation, it is very important subject in ecology. Examples include cleaner fish, pollination and seed dispersal, gut flora and nitrogen fixation by fungi.
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Mutualism /mu·tu·al·ism/ the biologic association of two individuals or populations of different species, both of which are benefited by the [more]Mutualism - Community and Resources

Noun
1. the relation between two different species of organisms that are interdependent; each gains benefits from the other
(synonym) symbiosis
(hypernym) mutuality, interdependence, interdependency
(hyponym) trophobiosis

(n.)
The doctrine of mutual dependence as the condition of individual and social welfare.