Living in the Environment 18th Edition by Tyler Miller,Scott Spoolman

تمرين 18

What are the two key concepts for this section Define and distinguish between crude birth rate and crude death rate. List three variables that affect the growth and decline of human populations. Explain how a given area's population change is calculated. Define fertility rate , and distinguish between the replacement-level fertility rate and the total fertility rate (TFR). How has the global TFR changed since 1955