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Density09

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Published in: Technology, Economy & Finance

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Transcript

  • 1. A note about India
  • 2. Where do we go from here? How high will we go? What will slow us down?
  • 3. More people, same amount of space What aspect of population does this affect?
  • 4. Density has changed
  • 5. Why don’t people spread out more evenly?
  • 6. What are some major reasons for this phenomenon?
    • Access to water- transportation
    • Ports- exchange goods and ideas
    • Temperate regions
  • 7. What are some densely populated areas of the U.S.?
  • 8. How is population density calculated?
    • Density is given in the number of people per square area (miles or kilometers)
    • density = people/mi 2
    • What is the population density of Wyoming? New York?
    Population: 506,529 Land Area: 97,100 mi 2 Population: 19,227,088 Land Area: 47,214 mi 2
  • 9.
    • 506,529 people over 97,100 square miles
    • 506,529/97,100
    • --> 5.21 people/mi 2
    • 19,227,088 people over 47,214 square miles
    • 19,227,088/47,214
    • --> 407 people/mi 2
  • 10. What are some problems with crowding?
  • 11. Limiting Factors
    • What will limit our growth?
  • 12. How high will we go? Math Time!
    • If everyone in the world was as densely populated as NYC
    • - 25,846 people /km2
    • How many people would there be?
    • How much space would each person have?
    • Land area of earth:
    • 149,000,000 km2
    • =
  • 13. Why is this impossible?
    • Real estimates put the capacity of the earth between 2 billion and 40 billion.
  • 14. How does population/development affect the environment?
    • signs web
    • Malthus reading (on website)