global warming

• main effects of global warming:

  1. melting of polar ice caps - causing excessive flooding and even the loss of low-lying land
  2. climate change - e.g. increase in the number and intensity of typhoons and a shortening of the wet season
• what to do to stop global warming:

  1. plant more trees
  2. ban logging
  3. conserve electricity
  4. use only fuel-efficient vehicles
  5. do not burn garbage
  6. minimize use of non-biodegradable, non-reusable, and non-recyclable
• renewable energy sources - will not run out due to continuous use
• non-renewable energy sources - in danger of running out
• fossil fuels - energy sources that were formed by nature for hundreds of millions of years but which are people exploiting and may run out in just a few more years
• global warming - heating up of the earth's surface due to a buildup of greenhouse gases
• major greenhouse gases:

  1. carbon dioxide
  2. methane
  3. nitrous oxide
  4. synthetic chemicals