Today we learned more about population. There are two types of countries in the world. They are classified as either developing countries or developed countries. Developing countries have a low life expectancy. But they do have a high death rate in their countries. This could be caused by war, disease, drugs, crime. Developing countries have less resources to use to fix their problems. Most places don't even have proper plumbing yet so it's going to take them a long time to fix their problems. A developed country has a high life expectancy and low death rate. This caused by good health care, exercise for kids, drug regulations and strict laws. In 1804 the world reached 1 billion in the population for the first time. Life expectancy is the average number of year's to be lived by a group of people born in the same year.

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