<P> Mutualism is the way two organisms of different species exist in a relationship in which each individual benefits from the activity of the other . 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 . Symbiosis involves two species living in close proximity and includes relationships that are mutualistic , parasitic , and commensal . Symbiotic relationships are sometimes , but not always , mutualistic . </P>
<P> Mutualism is the way two organisms of different species exist in a relationship in which each individual benefits from the activity of the other . 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 . Symbiosis involves two species living in close proximity and includes relationships that are mutualistic , parasitic , and commensal . Symbiotic relationships are sometimes , but not always , mutualistic . </P>
biological groups of organisms interacting with each other and the physical environment is a ( n )
biological groups of organisms interacting with each other and the physical environment is a ( n )
Mutualism
Mutualism