The word "symbiosis" is usually understood to mean ________, a relationship in which both partners benefit and may absolutely require each other.

Question

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Symbiosis is a relationship in which both partners benefit and may absolutely require each other. Mutualism fits this definition, while the other choices (commensalism, parasitism, predation, and competition) do not necessarily involve equal benefits for both partners or the requirement of the other partner for survival.

The Word "Symbiosis" Is Usually Understood to Mean ________, a Relationship