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Human Population Growth & Natural Resources

Human Population Growth & Natural Resources. Thomas Malthus’s essay was about: He claimed that the human population was growing faster than Earth’s resources could support. Earth’s Carrying Capacity. Drawing of Figure 16.1 World Population:. Earth’s Carrying Capacity.

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Human Population Growth & Natural Resources

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  1. Human Population Growth & Natural Resources

  2. Thomas Malthus’s essay was about: • He claimed that the human population was growing faster than Earth’s resources could support. Earth’s Carrying Capacity

  3. Drawing of Figure 16.1 World Population: Earth’s Carrying Capacity

  4. What are renewable resources? • Resources that cannot be used up or can replenish themselves over time. • Examples: wind, water, sunlight Earth’s Carrying Capacity

  5. What are nonrenewable resources? • Resources that are used faster than they form • Examples: coal, oil, natural gas Earth’s Carrying Capacity

  6. 1. Easter Island before people arrived on the island. The story of Easter Island

  7. 2. Islanders started building the Easter Island Statues. The story of Easter Island

  8. 3. Islanders cut down trees to make boats and shelter. The story of Easter Island

  9. 4. Lack of trees causes erosion of nutrient rich soil. The soil washed into the ocean. The story of Easter Island

  10. 5. Islanders run out of resources and are forced to leave the island. The story of Easter Island

  11. 6. Today Easter Island is covered with grass, no trees, and the famous Easter Island Statue heads. The story of Easter Island

  12. What is an ecological footprint? • The amount of land needed to produce and maintain enough food, water, shelter, energy, and water. The story of Easter Island

  13. http://www.footprintnetwork.org/en/index.php/gfn/page/calculatorshttp://www.footprintnetwork.org/en/index.php/gfn/page/calculators Ecological footprint Extra Credit

  14. Which continent has the largest human population? • Asia The story of Easter Island

  15. Which continent has the largest ecological footprint? • North America The story of Easter Island

  16. Which continent has the most level (close to equal) population to ecological footprint? • Central & South America The story of Easter Island

  17. What things can you personally do at home and school that can help save resources? • You answer! The story of Easter Island

  18. Why is our ecological footprint related to an area of land? • Land is needed to support a population because we need land to support a lifestyle (a place to live, work, land for agriculture, a place to put waste that supports this lifestyle) The story of Easter Island

  19. Air quality – acid rain

  20. Air quality – acid rain

  21. Air quality – ozone depletion

  22. Air quality – ozone depletion

  23. Air quality – Global Warming (greenhouse effect)

  24. Air quality – Global Warming (greenhouse effect)

  25. Water quality – Biological magnification

  26. Water quality – biological magnification

  27. Explain how biological magnification works using the picture: Water quality

  28. What other water related problems do we experience in Southern California? Water quality

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