Blog #11- Notes and Rates

We are starting to prepare for a test. One thing that Schick emphasized was rate and more rates. He talked about the migration rate. How many people are entering the country is shown is by the immigration rate. Then to see how many people are leaving a country you use the emigration rate to see these rates. Then we talked about the fertility ratio which means how many children a family will have in their life time. To keep a constant population the ratio has be 2.1. If it is any higher the population will grow. If it is any lower the population will decrease over time. This is important because if the fertility rate for all the countries was above 2.1 the world would start to become really over populated and the world may not be able to sustain a population that large. So all the rates all over the world helps us keep track of many different and important facts.