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Fertility Differences and Population Pyramids: A Comparative Analysis of USA and Mexico

This analysis explores fertility differences between the USA and Mexico by examining their Population Pyramids (PPs). Population Pyramids reflect demographic trends and reveal the stages of economic development. The USA’s pyramid indicates a more developed nation with low birth rates and an ageing population, while Mexico’s pyramid showcases a younger population with higher birth rates. These differences impact future challenges, such as economic dependency and resource allocation. By 2025, Mexico may face issues related to youth dependency and job creation, influenced by its population structure.

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Fertility Differences and Population Pyramids: A Comparative Analysis of USA and Mexico

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  1. 5 Mark Question Explain the differences in fertility in two contrasting geographical locations. [5 marks] 5 mark Q = 7 or 8 minutes = 10 to 12 lines of writing.

  2. AIMS: To interpret Population Pyramids (PPs). To know the 4 clear stages in Economic Development shown by PP’s. AKA Age-Sex Diagrams

  3. Population Pyramids • Reflect the past and present demographic trends in popn. • Wide base + narrow peak = high BR, large young popn, rapidly growing popn. • Steep vertical sides = ageing popn + low BR. Excess of elderly women as they tend to have longer life expectancies than men.

  4. Why do PP’s have different shapes? Population Pyramids Stages

  5. Facts • Number of countries with below-replacement fertility levels went from 19 in 1970 to over 50 in 2010. • Some geographers consider “popn explosion” to be over, and risk of “popn implosion”. • Estimates that between 2040 and 2050, global popn will decline by 85 million.

  6. Dependency Ratio Dependency Ratio = (% under 15) + (% over 65) x 100 % between 15 and 64 The dependency ratio tells you how many economically inactive people (0-15 and 65+) are dependent upon the economically active population (16 to 64). The equation above calculates a figure which shows the number of economically inactive people that are reliant on 100 economically active people. So a result such as 81.8 would mean that for every 100 economically active people there are 81.8 economically inactive people.

  7. The Ageing Ratio is the proportion of 65+ to the whole popn.

  8. Explain how these Population Pyramids show that the USA is more developed than Mexico. [6 marks]With reference to Mexico’s Population Pyramid,explainthe problems it will face in the year 2025. [6 marks] Figures 2010

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