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How is population measured?

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Presentation on theme: "How is population measured?"— Presentation transcript:

1 How is population measured?
Graphs show increase/decrease in population over time Pyramids show distribution of population by age and sex Factors affecting population change/predictions: War Disease Natural Disasters/Drought Famine Level of Development Wealth/Poverty Education Health Care Cultural Attitudes

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6 Population trends are measured by: Birth and death rates
Natural Increase Fertility rates Infant & childhood mortality Life expectancy How useful are these for making predictions?

7 How has global population distribution changed between 1950 and 2000?
What are the predicted changes between 2000 and 2050?

8 Countries and Areas Ranked by Population: 1950
1 China 562,579,779 2 India 369,880,000 3 United States 152,271,000 4 Russia 101,936,816 5 Japan 83,805,000 6 Indonesia 82,978,392 7 Germany 68,374,572 8 Brazil 53,443,075 9 United Kingdom 50,127,000 10 Italy 47,105,000

9 Countries and Areas Ranked by Population: 2000 –
1 China 1,268,853,362 2 India 1,004,124,224 3 United States 282,338,631 4 Indonesia 213,829,469 5 Brazil 175,552,771 6 Russia 146,709,971 7 Pakistan 143,958,926 8 Bangladesh 130,406,594 9 Japan 126,729,223 10 Nigeria 114,306,700

10 Countries and Areas Ranked by Population: 2050
1 India 1,807,878,574 2 China 1,424,161,948 3 United States 420,080,587 4 Nigeria 356,523,597 5 Indonesia 313,020,847 6 Bangladesh 279,955,405 7 Pakistan 277,554,980 8 Brazil 228,426,737 9 Congo 203,039,557 10 Mexico 147,907,650


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