Demographic transition model illustrating changes in population age structure over time, with age pyramids for males and females.

Graph showing population age distribution with male and female age pyramids, illustrating demographic transition stages from 1 to 5.

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Show Answer Key & Explanations Step-by-step solution for: What is the Demographic Transition Model? - Internet Geography

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- The graph illustrates demographic transition stages, showing declining birth rates (black line) and rising life expectancy (red line) over time.
- Stage 1: High birth and death rates result in a stable, youthful population pyramid.
- Stage 2: Death rates drop sharply while birth rates remain high, causing rapid population growth and a broad-based pyramid.
- Stage 3: Birth rates begin to decline, slowing population growth; the pyramid starts to widen in the middle.
- Stage 4: Birth and death rates are low and balanced, leading to a stable, aging population with a rectangular pyramid.
- Stage 5: Birth rates fall below death rates, causing population decline and an inverted pyramid shape.

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