today's notes

today in class, we took notes on birth rates and death rates of a population, migration which their is a thing called net migration which is the difference between the number of people entering and leaving a country during a year. we also learned why people would migrate out of a country or to a different country which the reason would be either because of unemployment or religious and ethnic persecution or because one counties health care system is better than their own countries. the last thing we talked about was something called a total fertility rate which is the average number of children born per woman.