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Global Warming - Paper 13

  • Date Submitted: 06/12/2011 06:25 AM
  • Flesch-Kincaid Score: 47.6 
  • Words: 1144
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Global warming is the current rise in the average temperature of Earth's oceans and atmosphere. The scientific consensus is that global warming is occurring and was initiated by human activities, especially those that increase concentrations of greenhouse gases in the atmosphere, such as deforestation and burning of fossil fuels.[2][3] This finding is recognized by the national science academies of all the major industrialized countries and is not rejected by any scientific body of national or international standing.[4][5][6][B]
During the 20th century, global surface temperature increased by about 0.74 °C (1.33 °F)[7][A] Using computer models of the climate system based on six greenhouse-gas emission scenarios, the 2007 Fourth Assessment Report by the Intergovernmental Panel on Climate Change (IPCC) projected that global surface temperature is likely to rise 1.1 to 6.4 °C (2.0 to 11.5 °F) by 2100.[7][8]
An increase in global temperature will cause sea levels to rise and will change the amount and pattern of precipitation, probably including expansion of subtropical deserts.[9] Warming is expected to be strongest in the Arctic and would be associated with continuing retreat of glaciers, permafrost and sea ice. Other likely effects of the warming include more frequent occurrence of extreme weather events including heatwaves, droughts and heavy rainfall events, species extinctions due to shifting temperature regimes, and changes in agricultural yields. Warming and related changes will vary from region to region around the globe, though the nature of these regional changes is uncertain.[10] In a 4°C world, the limits for human adaptation are likely to be exceeded in many parts of the world, while the limits for adaptation for natural systems would largely be exceeded throughout the world. Hence, the ecosystem services upon which human livelihoods depend would not be preserved.[11]
The Kyoto Protocol is aimed at stabilizing greenhouse gas concentration to prevent a...

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