When discussing human population trends, birth rate is often…
When discussing human population trends, birth rate is often expressed as a number called the total fertility rate (TFR). The TFR is the number of children an average woman in the country has in her lifetime. The number of children a couple must have to replace themselves in the population is called the total replacement rate (TRR). TRR can be used a lot like death rate when calculating population trends. As a worldwide average, each couple must have 2.1 children to replace themselves (the extra 0.1 is the result of infant mortality). TFR and TRR are given for several countries. Which country has a decreasing population size?