1. Populations

2. OVER 7 BILLION PEOPLE!

3. Exponential growth Global population 10 billion by 2050
Level off?
Between 1000ad and 1800ad = slow growth
1800 – 1950 global population doubled
It doubled again between 1950 and 2000

7. Demography The study of populations Birthrate Death rate
Use statistics to measure/learn from population growth
Birthrate
Death rate
Natural increase

8. Demographics Transition Model
Sequence of demographic changes where a country moves from high birth/death rates to low birth/death rates in five stages
Stage 1
Stage 2
Stage 3
Stage 4
Stage 5
Low Growth
High birthrate and high death rate
High Growth
Decrease in the death rate
Moderate Growth
Decrease in the birthrate
Low birthrate and low death rate
Zero or Negative Growth
Population neither grows nor shrinks

9. Demographics Transition Model

10. DTM first used in industrialized Western Europe
Abundant / reliable food sources
Improved healthcare
Access to medicine and technology
Higher standard of living: Quality and quantity of goods/services available and the way they are distributed within a population

11. Population pyramids

14. Negative growth rate Higher death rate than birthrate Labor shortages
Migrant labor
“host Population” vs. Migrant communities

15. Population distribution
Variations in population that occur across a country, a continent, or the world
Where do people live and why do they live there?
Most of the population lives on 30% of the land
Mountains, tundra, deserts
Europe and Asia are most densely populated
Most people in Europe, Australia, and the western hemisphere live in or around urban areas

17. Population Density
The average # of people living on a square mile or Kilometer of land
Divide the total population by the total land area
The higher the average, the higher the density
Does not account for uneven population density
Total land area includes uninhabitable zones
Egypt – 232 people per sq. Mile OR 7,501 people per sq. Mile if you use only the inhabitable land area