AP BIOLOGY

Detailed explanation-1: -fertility rates is the number of births by age of mother and the number of women of childbearing age classified by five-year age groups. In all developed countries and in several developing countries, the information on births is obtained from a civil registration system and that on women from censuses.

Detailed explanation-2: -The total fertility rate in a specific year is defined as the total number of children that would be born to each woman if she were to live to the end of her child-bearing years and give birth to children in alignment with the prevailing age-specific fertility rates.

Detailed explanation-3: -The fertility rate at a given age is the number of children born alive to women of that age during the year as a proportion of the average annual population of women of the same age.

Detailed explanation-4: -Though both measures relate to population growth, a country’s birth rate and fertility rate are noticeably different: Birth Rate: The total number of births in a year per 1, 000 individuals. Fertility Rate: The total number of births in a year per 1, 000 women of reproductive age in a population.