All of the Following Factors Contribute Significantly to the Rate

Multiple Choice

All of the following factors contribute significantly to the rate of change of a country's population (such as the U.S. ) EXCEPT:

A) life expectancy (the average number of years a population lives from birth) .
B) immigration (the number of people who enter a country for the purpose of permanent residence) .
C) population density (defined as the total number of people per square mile/kilometer) .
D) birth rate (the number of births during a specified time period) .
E) death rate (the number of deaths during a specified time period) .