today in class we continued to learn about population pyramids. I learned about how you can learn things about an area by the pyramids shape and why some ages have more people than others. for example you can tell when there is a military town because there is a large population of young men. also you can tell when it is a college town because there is a large number of boys and girls in there early twenties. I also learned that in japan and countries where the old population it much larger than the new that they are going to have a lot of problems later because there population is going to decrease a lot and there not going to have enough young people to do jobs that are needed. then we went on a website and I liked it a lot. it showed you the triangles for countries. it helped because it told you the amount of people in age and helped you compare different ages. also you could look at what they predicted it would look like in later years. I liked this because you could see how areas are going to improve and what ones are going to have problems in later years. I like learning about population pyramids.
today in class we continued to learn about population and settlement. we learned about life expectancy. life expectancy means the average number of years believed by a group of people born in the same year. some examples are, the highest is in Monaco, 89.52 total- 85.63 men and 95.58 women. U.S. #42 79.68 total- 77.32 men and 81.97 women. lowest Chad 49.81 total- 48.64 men and 51.03 women. we also learned about crude birth rate, which means the number of births per 1,000 of the population. Also we learned about the crude death rate, which means the number of deaths per 1,000 of the population. we learned about rate of natural increase which is produced by subtracting the death rate from the birth rate. this gives us the annual natural growth rate in percentage form-for a country or region. the net migration rate is the difference between the number of persons entering and leaving a country during a year. an excess of persons entering the country is net immigration. this is written as a...
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