Life Expectancy

In class today we talked about life expectancy, what a crude birth rate is, and net migration. There are over 7 billion people on the planet and is increasing by over 73 million per year. Life expectancy is defined as average number of years to be lived in a group of people born in the same year. The crude birth rate os the number of births per 1,000 people of the population, it is produced by subtracting the death rate from the birth rate and this gives us the annual natural growth rate in percentage. The net migration rate is the difference between the number of persons entering or leaving a country during a year. An excess of persons entering the country is net immigrants and persons leaving the country is net emigrants, Immigrants are always positive and emigrants are always negative number. After we discussed this we took a look at a web site called https://www.cia.gov/index.html, it lists countries and facts about each place like the life expectancy, the obesity rate, and includes photos of the country. I really like this website because it is interesting to see all the different kinds of places and what they look like and what they are like.