Latin America Environmental Concerns. new 2011ppt


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Latin America Environmental Concerns. new 2011ppt

  1. 1. Latin America:
  2. 2. Three Main Issues: <ul><li>Air pollution in Mexico City </li></ul><ul><li>Destruction of the Amazon Rain Forest </li></ul><ul><li>Oil –related pollution in Venezuela </li></ul>
  3. 3. 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>
  4. 4. Traffic Congestion - Mexico City
  5. 5. Air Pollution Over Mexico City
  6. 6. Air Pollution Over Mexico City
  7. 7. 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. This puts higher level of gases into the air that harm eyes, lungs, & the heart. </li></ul><ul><li>Mexico lies in a valley surrounded by mountains that trap in the polluted air. </li></ul>
  8. 8. Surrounded by Mountains…
  9. 9. 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>
  10. 11. 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>
  11. 12. Destruction: Amazon Rainforest
  12. 13. De forest ation = cutting down forest of trees <ul><li>In the 1950s, the Brazilian government began building a major highway system </li></ul><ul><ul><li>Opened rainforest to loggers who have since cut down thousands of trees to sell to companies who make products out of wood. </li></ul></ul><ul><li>Brazil’s population has increased-- parts of rainforest are being cut down to create farms to grow crops and for cattle ranching. </li></ul>
  13. 16. Before deforestation…
  14. 17. After deforestation…
  15. 18. 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>
  16. 19. Result of Deforestation
  17. 22. Solutions… <ul><li>The 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>
  18. 24. 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>
  19. 25. Result of Drilling for Oil…
  20. 26. Problems… <ul><li>Producing, selling, & burning oil contributes to pollution in Lake Maracaibo </li></ul><ul><li>Venezuela is cutting down trees twice as fast as any other country in Latin America in order to make way for oil drilling. </li></ul><ul><li>Venezuela burns more energy & puts out more carbon dioxide than any other country in Latin America. </li></ul>
  21. 29. To make problems worse…. <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……to keep making money. </li></ul>
  22. 30. Solutions… <ul><li>People are becoming more 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>