An Interaction Between Two Species in Which Both Species Benefit

Question

An interaction between two species in which both species benefit is known as ____.  
A) mutualism
B) parasitism
C) commensalism
D) competition
E) predation

Accepted Answer

Mutualism is the only option where both species benefit from the interaction. In parasitism, one species benefits while the other is harmed. In commensalism, one species benefits while the other is unaffected. In competition, both species are harmed. In predation, one species benefits while the other is harmed.