Could it be... more notes from Human Geography? Dear God!

    You guys know the drill on slow Wednesdays like these. Insular basically means to be proud of one's culture, and not willing to leave their country of origin no matter what. Total Fertility rate is the average number of children born per woman. For a population to remain relatively the same, the total fertility rate must be 2.1. If its above 2.1 the population will rise, and if its below 2.1 the population will fall. The world total fertility rate is 2.42, the U.S. 2.01, Nigeria 6.89, and Japan 1.4. The reason Nigeria's total fertility rate is so high is because some children will die very early on, so the mothers have more babies. In Japan the rate is so low because there are many more elderly people than young people, and the young people don't have that many children either.