Section 5.3

demographic transition

demographic transition is a change in a population from high birth and death rates to low birth and death rates

demography

demography is the scientific study of population characteristics.

what factors help explain the differences in human population growth in different countries?

Birthrates, death rates, and the age structure of a population help predict why some countries have high growth rates while other countries populations increase more slowly.

describe one example of how the environment affected human migration or human population change.

Environmental extremes, or changes in the resource availability, have profoundly altered human death rates, driven mass migrations, or both.

how has the human population size changed throughout history?

Human populations tend to increase, and our population growth rate has changed over time.