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Noun
1. mutualism; symbiosisBiology
Wikipedia definition
2. Mutualism (biology)Mutualism is the way two organisms of different species biologically interact in a relationship in which each individual derives a fitness benefit (i.e. , increased or improved reproductive output). Similar interactions within a species are known as co-operation. Mutualism can be contrasted with interspecific competition, in which each species experiences reduced fitness, and exploitation, or parasitism, in which one species benefits at the expense of the other.
Read “Mutualism (biology)” on English Wikipedia
Read “相利共生” on Japanese Wikipedia
Read “Mutualism (biology)” on DBpedia

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