Today we were noticed that we will have a test on Monday about our whole unit. Even though we already took a test and had a group project on this unit. We were hinted at some of the questions that could be on the test. The test will cover things about population and how to read a population pyramid. Also certain facts like that you have to have a TFR (Total Fertility Rate) on 2.1 to keep your population the same. Or facts like what is the total population of the world which is 7.6 billion