The rate of world population growth has decreased since 1650.
The term life expectancy means the average length of life for members of a given population.
Overpopulation has been a problem throughout human history.
A fertility rate of 3.5 children per woman is required to maintain population replacement. (p. 395)
If the United States did not allow any immigrants to enter the country, its population would eventually grow smaller, given current fertility rates.
The life expectancy in the United States has increased about 25 years since 1900. (p. 395)
In the United States, life expectancy for black females is greater than for white females. (p. 396)
Most mortality in the United States is now due to infectious diseases.
Migration activity throughout the world is increasing.
Many Irish responded to push factors when they immigrated to the United States to escape the potato famine.
Preindustrial societies are characterized by high birth rates and declining death rates.
In comparing the population pyramids of Sub-Saharan Africa and Western Europe, we find that Africa's population has a much greater potential for future growth than does Europe's.
Food surpluses are associated with the development of the first cities.
Primate cities develop in industrial societies.
New York is a global city in that it contains organizations that run the worldwide economy.
