Climate change

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  • Global warming is the result of increase in the earth's average surface temperature.
  • Today, the amount of carbon dioxide is higher than at any time in the last 650,000 years.
  • The green house effect is the trapping of the sun's warmth in a planet's lower atmosphere due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.
  • Global sea level rose about 17 cm in the last century. The rate in the last decade is nearly double that of the last century.
  • The oceans have absorbed much of this increased heatwith the top 700 meters of ocean showing warming of 0.302 degrees Fahrenheit since 1969.
  • The number of record high temperature events in the US has been increasing while the number of record low temperature events has been decreasing, since 1950.
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