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The greenhouse effect...

  • By humans
  • Caused by combustion of fossil fuels
  • They produce CO2
  • CO2 makes a barrier in the atmosphere
  • Heat from the sun can get through but not back out.
  • Temperature rises

Natural Climate change...

  • Result of natural changes
  • Warmest periods were before humans started to produce carbon footprints
  • If the greenhouse effect was true the top layer of the atmosphere should be heating up faster than the earths surface but it isn't

Solar Activity

  • Earths temperature caused by radiation from the sun
  • When solar activity is high fewer


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