| A | B |
|---|
| What affect does time have on the size of a population? | Over time, most populations increase. |
| What factors increased the human population growth? | Agriculture, industry, reliable food supply, shipping of goods worldwide, better sanitation, medicine, health care, increased birth rates. |
| How did Thomas Malthus believe population growth would be controlled? | By war, famine, and disease. |
| Explain what demographers do. | They scientifically study human populations, examining characteristics of the populations and attempting to explain how the populations will change over time. They use birthrates, death rates, and age structures of populations to make predictions. |
| What is meant by demographic transition? | It's the change in a population from high birth and death rates to low birth and death rates. |
| In what three areas of the world are populations no longer growing exponentially because of the demographic transition? | United States, Japan, and Europe. |
| In which two countries are birthrates the highest? | India and China |
| How are age-structure diagrams useful to demographers? | These graphs enable scientists to compare the numbers of males and females within different age groups of a population; they can compare different population groups, too. |
| What is the projected world population by 2050? | More than 9 billion people |
| When was the highest peak growth rate worldwide? | In the 1960's (growth rate of 2.19). See projections pg. 132. |
