Verified Answer :

Symbiosis is the name given to a close relationship between organsims of different speciies. Usually one of the species benefits.

The correct answer is symbiosis.

The biological phenomenon in which at least one organisms is benefited is called symbiosis. This is a kind of interaction in which one organism is benefited by the other organism. These interactions can be of any type, symbiotic or parasitic. In symbiotic association, both the species gets benefited by one another. In case of parasites, only one organism is benefited which is dependent on the other organism for food.

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