1. Once a baby boom ends, births are lower for a number of years.
2. The population a region can support without significant environmental deterioration. For example, most towns
and cities started to grow on land that could support a large population.
3. A birth spike. For example, after World War II, the United States had an increase in births that lasted from 1946
to 1965. They are associated with the end of a war and economic abundance.
4. A slowdown of births.
5. The average number of children a woman will have throughout her childbearing years. This is the more accurate
measurement of how women are viewed in a society.
6. A measure of the average population per square mile or kilometer of an area. It measures how crowded a place
is.
7. When a region has more people than it can support. This is partially dependent on its population distribution