Unit 6 Environmental Concerns


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Unit 6 Environmental Concerns

  1. 1. Latin America’s Environmental Concerns Unit 6 Notes
  2. 2. Air Pollution in Mexico City <ul><li>Nearly 20 million people live here </li></ul><ul><li>Second most populated city in the world--Tokyo is first </li></ul><ul><li>City’s population & location contribute to its bad air pollution problem </li></ul><ul><li>Considered to be the most polluted city in the world </li></ul>
  3. 3. Air Pollution Over Mexico City
  4. 4. Air Pollution Over Mexico City
  5. 5. Causes of Air Pollution <ul><li>Huge population = lots of cars </li></ul><ul><li>High Elevation--less oxygen so fuels don’t fully burn </li></ul><ul><ul><li>--higher level of gases that harm eyes, lungs, & the heart </li></ul></ul><ul><li>Sierra Madre mountains surround city & trap in polluted air </li></ul>
  6. 6. Surrounded by Mountains…
  7. 7. Solutions <ul><li>To reduce air pollution, the city promotes public transportation (buses, subway) </li></ul><ul><li>City is also testing buses that run on cleaner burning fuels </li></ul><ul><li>New restrictions on car use </li></ul><ul><li>Workshops to teach people about the environment </li></ul>
  8. 8. Amazon Rainforest <ul><li>Largest rainforest in the world </li></ul><ul><li>Most of the rainforest is in Brazil </li></ul><ul><li>Experiences a hot, humid, & rainy tropical climate </li></ul><ul><li>Home to a huge variety of plants, trees, insects, birds, & animals </li></ul><ul><li>Produces 1/3 of the earth’s oxygen </li></ul>
  9. 9. Amazon Rainforest
  10. 10. Destruction of the Amazon Rainforest <ul><li>In the 1950s, the Brazilian government began building a major highway system </li></ul><ul><ul><li>Opened rainforest to loggers </li></ul></ul><ul><li>Brazil’s population has increased--parts of rainforest are being cut down to create farms </li></ul>
  11. 11. Before…
  12. 12. After…
  13. 13. Results of Deforestation… <ul><li>Plants & animals are losing their homes; many are endangered, and some are becoming extinct </li></ul><ul><li>Loss of trees increases carbon dioxide, a gas that contributes to global warming </li></ul>
  14. 17. Solutions… <ul><li>Government is working to fix the deforestation problem by passing laws on cutting down too many trees </li></ul><ul><li>What else can be done? </li></ul>
  15. 18. Oil-Related Pollution in Venezuela <ul><li>One of the world’s leading producers of oil </li></ul><ul><ul><li>has been producing oil for 90 years </li></ul></ul><ul><li>Oil production has boosted economy </li></ul><ul><ul><li>Main source of income for many people </li></ul></ul><ul><li>Oil production results in toxic wastes, air pollution, & oil spills </li></ul>
  16. 19. Result of Drilling for Oil…
  17. 20. Problems… <ul><li>Producing, selling, & burning oil contributes to pollution in Lake Maracaibo </li></ul><ul><li>Cutting down trees for oil drilling twice as fast as any other country in LA </li></ul><ul><li>Burns more energy & puts out more carbon dioxide than any other country in LA </li></ul>
  18. 23. Problems… <ul><li>Money from selling oil is the country’s main source of income </li></ul><ul><li>Venezuelans are motivated to keep producing, selling, and burning oil--and polluting… </li></ul>
  19. 24. Solutions… <ul><li>People are becoming aware that the cost in the long term may be too great </li></ul><ul><li>Groups are calling for renewable energy sources and the clean-up and prevention of pollution </li></ul>