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El Nino
Great Lakes
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A - Greenhouse Gases

checkmarkClick here to go to the GREENHOUSE WARMING site.

  • Read the information and answer the following question:
  1. What are some greenhouse gases other than CO2?
  2. What are two reasons PFCs are a bad alternative to CFCs?

B - Contributions of Gases

checkmarkClick here to go to the MAJOR GREENHOUSE GAS site.

  1. What is the least important greenhouse gas?
  2. What is the most important greenhouse gas?
  3. Which greenhouse gas destroys another greenhouse gas?