The spreadsheet below shows the initial population in the first row. Demographics are changing rapidly. Population momentum represents a natural increase in population in countries with above-replacement fertility. 0000132434 00000 n If the population of the first generation is arbitrarily set at 100, the second is then 200, and the third is 400. 0 %%EOF AP Human Geography Unit 2 Flashcards | Quizlet There are some regions of the U.S., such as the Northeast and Southwest, that have very large cities. 2.7 Population . Language links are at the top of the page across from the title. What does this mean for retirement or pensions? If you have questions about how to cite anything on our website in your project or classroom presentation, please contact your teacher. In others, they are unlikely to make it into their sixth. During this stage, the human population begins to increase due to high birth rates and declining death rates. 0000021600 00000 n Image credits: Marvels Juggernaut (Juggernaut by Hannaford is licensed under CC BY-SA 2.0); Population pyramid (1979 Chinese Population Pyramid December 2019 by PopulationPyramid.net is licensed under CC BY 3.0 IGO); Japan graph (JonMcDonald / Japan Population by Age 1920-2010 with Projection to 2060 / CC BY-SA 4.0). Geographers have modeled the population dynamics of places for decades. Create your account, 19 chapters | These are places that are poor or economically or politically unstable. However, there is a lag in the decline in birth rates. By Stage Two as the society industrializes food becomes more steadily available, water supplies get cleaner and sanitation and medical care improves. This website uses cookies to improve your experience while you navigate through the website. 0000016769 00000 n demographic change. Russia, on the other hand, has a rapidly aging population and a partially collapsed social security network. Through trade and conquest, Western Europeans systematically replaced the traditional economies of the Native populations. The Four-Stage Demographic Transition Model.
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