3 D Sara Loo, Science Deforestation

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3 D Sara Loo, Science Deforestation

  1. 1. Deforestation
  2. 2. What is deforestation? <ul><li>Deforestation is the conversion of forested areas to non-forest land for </li></ul><ul><li>arable land (growing crops) </li></ul><ul><li>pasture </li></ul><ul><li>urban use </li></ul><ul><li>logged area </li></ul><ul><li>wasteland. </li></ul>
  3. 3. Causes of Deforestation <ul><li>Logging </li></ul><ul><li>logging industry is fueled by the need for disposable products. </li></ul><ul><li>eg. McDonald’s needs 800 square miles of trees to make the amount of paper they need for a year’s supply of packaging. </li></ul><ul><li>eg.British Columbia Manufacture 7,500,500 pairs of chopsticks a DAY!! </li></ul>
  4. 4. <ul><li>Cattle grazing </li></ul><ul><li>Due to the growth of fast food chains, high demand of beef for hamburger. In the Amazon region of South America alone, there are 100 000 beef ranches! </li></ul>
  5. 5. <ul><li>Other causes </li></ul><ul><ul><li>Acid rain and the building of dams have their share of harmful effects. </li></ul></ul><ul><ul><li>The race to produce cash crops </li></ul></ul><ul><ul><li>Urban development </li></ul></ul><ul><ul><li>Catastrophic wildfires in dry areas </li></ul></ul><ul><ul><li>Forest degradation </li></ul></ul><ul><ul><li>Slash-and-burn techniques by farmers </li></ul></ul><ul><li> eg.Brazil, Indonesia </li></ul>
  6. 6. Effects of Deforestation <ul><li>Atmospheric pollution </li></ul><ul><li>Wildlife </li></ul><ul><li>Deforestation causes the destruction of the habitats of wildlife animals. </li></ul><ul><li>eg.extinction </li></ul><ul><li>endangered species </li></ul><ul><li>Hydrologic cycle water resources </li></ul><ul><li>The presence or absence of trees affect the quantity of water. </li></ul><ul><li>Flood </li></ul>
  7. 7. What can we do to help? <ul><li>We can adopt a “zero waste” frame in our everyday-lives. </li></ul><ul><li>We can reuse/reduce things </li></ul><ul><li>eg.paper </li></ul><ul><li>cans </li></ul><ul><li>boxes </li></ul>
  8. 8. Did you know? <ul><li>Every ton of recycled paper saves approximately 17 trees. </li></ul><ul><li>It is equivalent to 4,100 kilo watt hours of electricity. </li></ul><ul><li>Enough energy to heat the average home for 6 months!! </li></ul>
  9. 9. THE END

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