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Latin America Environmental Concerns. new 2011ppt
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Latin America Environmental Concerns. new 2011ppt

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Transcript

  • 1. Latin America:
  • 2. Three Main Issues:
    • Air pollution in Mexico City
    • Destruction of the Amazon Rain Forest
    • Oil –related pollution in Venezuela
  • 3. Air Pollution in Mexico City
    • Nearly 20 million people live here
    • Second most populated city in the world--Tokyo is first
    • City’s population & location contribute to its bad air pollution problem
    • Considered to be the most polluted city in the world
  • 4. Traffic Congestion - Mexico City
  • 5. Air Pollution Over Mexico City
  • 6. Air Pollution Over Mexico City
  • 7. Causes of Air Pollution
    • Huge population = lots of cars
    • 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.
    • Mexico lies in a valley surrounded by mountains that trap in the polluted air.
  • 8. Surrounded by Mountains…
  • 9. Solutions
    • To reduce air pollution, the city promotes public transportation (buses, subway)
    • City is also testing buses that run on cleaner burning fuels
    • New restrictions on car use
    • Workshops to teach people about the environment
  • 10.  
  • 11. Amazon Rainforest
    • Largest rainforest in the world
    • Most of the rainforest is in Brazil
    • Experiences a hot, humid, & rainy tropical climate
    • Home to a huge variety of plants, trees, insects, birds, & animals
    • Produces 1/3 of the earth’s oxygen
  • 12. Destruction: Amazon Rainforest
  • 13. De forest ation = cutting down forest of trees
    • In the 1950s, the Brazilian government began building a major highway system
      • Opened rainforest to loggers who have since cut down thousands of trees to sell to companies who make products out of wood.
    • Brazil’s population has increased-- parts of rainforest are being cut down to create farms to grow crops and for cattle ranching.
  • 14.  
  • 15.  
  • 16. Before deforestation…
  • 17. After deforestation…
  • 18. Results of Deforestation…
    • Plants & animals are losing their homes; many are endangered, and some are becoming extinct
    • Loss of trees increases carbon dioxide, a gas that contributes to global warming
  • 19. Result of Deforestation
  • 20.  
  • 21.  
  • 22. Solutions…
    • The government is working to fix the deforestation problem by passing laws on cutting down too many trees
    • What else can be done?
  • 23.  
  • 24. Oil-Related Pollution in Venezuela
    • One of the world’s leading producers of oil
      • has been producing oil for 90 years
    • Oil production has boosted economy
      • Main source of income for many people
    • Oil production results in toxic wastes, air pollution, & oil spills
  • 25. Result of Drilling for Oil…
  • 26. Problems…
    • Producing, selling, & burning oil contributes to pollution in Lake Maracaibo
    • Venezuela is cutting down trees twice as fast as any other country in Latin America in order to make way for oil drilling.
    • Venezuela burns more energy & puts out more carbon dioxide than any other country in Latin America.
  • 27.  
  • 28.  
  • 29. To make problems worse….
    • Money from selling oil is the country’s main source of income
    • Venezuelans are motivated to keep producing, selling, and burning oil--and polluting……to keep making money.
  • 30. Solutions…
    • People are becoming more aware that the cost in the long term may be too great.
    • Groups are calling for renewable energy sources and the clean-up and prevention of pollution.
  • 31.