Fertility's the natural capability of giving life. As a measure, "fertility rate"'s the number of children born per couple, person or population. This's different from fecundity, which's defined as the potential for reproduction (influenced by gamete production, fertilisation and carrying a pregnancy to term). Infertility's a deficient fertility. Human fertility depends on factors of nutrition, sexual behavior, culture, instinct, endocrinology, timing, economics, way of life, and emotions. Agri… (More on Fertility)