<P> Maximum life span contrasts with mean life span ( average life span , life expectancy ) , and longevity . Mean life span varies with susceptibility to disease , accident , suicide and homicide , whereas maximum life span is determined by `` rate of aging '' . Longevity refers only to the characteristics of the especially long lived members of a population , such as infirmities as they age or compression of morbidity , and not the specific life span of an individual . </P>
<P> Maximum life span contrasts with mean life span ( average life span , life expectancy ) , and longevity . Mean life span varies with susceptibility to disease , accident , suicide and homicide , whereas maximum life span is determined by `` rate of aging '' . Longevity refers only to the characteristics of the especially long lived members of a population , such as infirmities as they age or compression of morbidity , and not the specific life span of an individual . </P>
the average length of life of members of a species is called
the average length of life of members of a species is called
mean life span average life span life expectancy
mean life span average life span life expectancy