Fecundity
Fecundity is defined in two ways; in human demography , it is the potential for reproduction of a recorded population as opposed to a sole organism , while in population biology , it is considered similar to fertility , the natural capability to produce offspring , measured by the number of gametes ( eggs ) , seed set , or asexual propagules . 
<triplet> Fecundity <subj> population biology <obj> facet of