"Fertility rates" refers to the number of babies being born to women in a particular population or society. It indicates how many children on average each woman is having during her reproductive years. Full definition
High fertility rates in areas of the developing world that can least cope put tremendous pressure on freshwater and sanitation needs and fuel economic and religious tensions. (scientificamerican.com)
In the north, west and centre of the continent, comparatively high fertility rates and immigration are ensuring population growth for the foreseeable future. (innovations-report.com)
Lower fertility rates around the world could keep it that way for many years. (mfs.com)