Question

a biological relationship where members of two or more species live in close association and both benefit is ________. commensalism symbiosis mutualism parasitism need help? review these concept resources.

Explanation:

Commensalism is when one - species benefits and the other is unaffected. Symbiosis is a general term for close living associations. Mutualism is a symbiotic relationship where both species benefit. Parasitism is when one organism (parasite) benefits at the expense of the other (host).

Answer:

mutualism