October 7,2010- Make up

1. Life expectancy- an expected time to live as calculated on the basis of statistical problems
2. Birth rate- the ratio of live births in an area to the population of that area
3. Death rate- the ratio of deaths in an area to the population of that area
4. RNI(rate of natural increase)- the crude birth rate minus the crude death rate of a population
5. TFR(total fertility rate)- how many babies are born per women
6. Net Migration rate- the difference of immigrants of an area over a period of time
7. Population pyramid- a graph showing the age structure of the population
8.  4.32 is the net migration rate for the U.S.
9. Pull factor- factors that make you want to move to a country
10. Push factor- factors that "push" you away from a country because there is something that you don't like
11. 1.8 people die per second
12. The baby boom happened after World War 2, it was the time in which many babies were born.