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World Population

World Population. Population Growth. The current population of the world is just under 7 billion. Humans only live on 30% of the earth’s land Global population is projected to reach 9 billion by the year 2050. Measuring Population.

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World Population

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  1. World Population

  2. Population Growth • The current population of the world is just under 7 billion. • Humans only live on 30% of the earth’s land • Global population is projected to reach 9 billion by the year 2050.

  3. Measuring Population • Death rate – the number of deaths per year for every 1000 people • Birth rate – the number of births per year for every 1000 people • Population growth occurs when the birth rate is higher than the death rate. • Population decline occurs when the death rate is higher than the birth rate • Immigration can also impact population growth

  4. Challenges of Population Growth • Keeping up with food production • Shortages of water, housing, and clothing • If the birth rate is high then too much of the population would be young people who cannot contribute to food production • Many scientists believe that even with rapid population growth technology is advancing to be able to keep up with the growing population

  5. Negative Population Growth • Recently many countries in Europe have experienced negative population growth (death rate > birth rate) • This also creates problems • Difficult to find workers • Labor must be recruited from other countries which can cause tensions between the newcomers and the European nation

  6. Population Distribution • Population distribution – the pattern of human settlement • The population distribution of the world is extremely uneven – humans live in areas where there is water and where the climates are not harsh. • Population density – the average number of people living on a square mile of land • To calculate population density total population of a country and divide by its total land area

  7. Let’s find Population Density • Australia • Bangladesh • Brazil • Canada • China • Cuba • Egypt • Germany • Iceland • India • Iraq • Israel • Italy • Mexico • Monaco • Mongolia • Russia • South Korea • Tuvalu • United Kingdom • United States • Mumbai, India • Shanghai, China • New York City, NY • Chicago, IL • Owensboro, KY • Kentucky • Alaska • Rhode Island

  8. Population Movement • Migration – the movement of people from place to place • People migrate for many different reasons • Urbanization – the growth in population of urban areas due to migration • About half of the worlds population lives in cities • Refugees – people who are forced to leave their country to escape persecution or disaster.

  9. The Miniature Earth Project • Miniature Earth Project

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