World Population

The population of the world is increasing a lot. Our population is at 6 billion and counting. It’s said to be about 9 billion by 2050. Many things factor out population like birth rates and death rates. Also immigration and emigration have an effect as well.

China had increased in population from about .55 in 1950 to 1.32 billon in 2007. All though the growth rate has dropped since the one child policy was put into effect. Back in the day people had children to help with the farm work. The somethimes had many so at least one would survive. Now women have less children cause they will make it through their childhood. Some nation use the replacement fertility, this helps a country keep its population.

Age structure is a graph that shows us what age groups there are in a population. It helps predict how the size of the population will change over time. A population with a fewer younger kids will likely decrease over time. If you have an older population then your population will decrease. It’s better off to have a slightly older population.

Age structure also helps us with sex ratio. This is the number of males compared to girls. There are slightly more males up until age 40, then there are more females on the age chart. There may be more males do to the fact that some males immigrate for work, while females don’t. They are looked down upon in some cultures more than males. Some nations have good conditions and good health care. This increasing the death ages. Most developed companies have way better health and the conditions are way better. Developed countries are Canada, Western Europe Australia New Zealand, Japan, and we.

There are many things in the world that cause the population to grow and decrease the population. Things like death, plague, and immigration. It all Cause changes. Many people want to get the death rate low. But this would cause the worlds population to go up. Making the world smaller and maybe someday we will run out of room.