Global warming


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presentation about effect, causes and consecuences of global warming.

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Global warming

  1. 1. GLOBAL WARMING<br />By: Eduardo Zermeño Pérez<br />
  2. 2. ABSTRACT<br />This presentation is about global warming, the causes and the environmental consequences that scientists predict for the future of the planet if this phenomenon keeps on affecting the environment at the same rate it has been affected specially since the industrial revolution. <br />There are many scientists that are working on solutions against global warming, but in this presentation we will also examine the consequences that may come if actions are or not taken against global warming.<br />
  3. 3. OUTLINE<br />1. What is Global Warming? <br />2. Causes of global warming<br />2.1. Greenhouse effect:<br />4.Activities disturbing the Greenhouse effect:<br />5. Effects of global warming:<br />6. Consequences of taking or not taking action against global warming<br />
  4. 4. 1. What is global warming?<br />Global warming refers to a group of alterations in the earth’s temperature which can affect the climatic parameters.<br />
  5. 5. 2. Causes <br />Increase in the amount of greenhouse gasses in the atmosphere attributed mainly to human activity. Which has caused an unbalance in the process called the green house effect.<br /><ul><li>Since1900, the average temperature on the planet has increased by 0.74 degrees Celsius</li></li></ul><li>3. Greenhouse effect<br />As human beings cut down forests the capacity of trees to remove CO2 has diminished, as we continue to burn large amounts of fossil fuels and pollute the planet an exaggerated green house effect is occurring. <br />The greenhouse gases in the surface are increasing keeping trapped more heat within the atmosphere resulting in an increase in the world surface temperature known as global warming.<br />These gases help regulate temperature of the earth.<br />The earth is surrounded by a warming blanket of air which makes life sustainable in the planet. If earth was not surrounded by this layer earth would be much too cold for human habitation.<br />Due to the burning of large amounts of coal, oil, and natural gas, the amount of greenhouse gases in the atmosphere has dramatically increased 30% since 1750.<br />The atmosphere contains small amounts of methane, carbon dioxide, nitrous oxide and other gases in the atmosphere known as greenhouse gases, this gases help to retain heat through a vital process called the green house effect.<br />Some of the light is reflected and some is absorbed. The absorbed light warms the surface of the earth, the heated surface then radiates infrared light into the atmosphere where it’s absorbed by greenhouse gases. <br />Trees remove CO2 from the air as part of their natural processes<br />The greenhouse effect occurs when sunlight passes through the atmosphere and strikes the earth<br />
  6. 6. 4. Activities disturbing the greenhouse effect<br />Burning fossil fuels<br />Deforestation<br />A growing world population<br />
  7. 7. 4.1 Sources of emissions<br />65% from burning fuel to create energy (excluding transport)<br />21% from transport <br />9% from agriculture – for example, nitrous oxide from chemical fertilizers or methane given off by animals and manure.<br />5% from industry – for example, manufacturing goods<br />
  8. 8. 5. Effects of global warming<br />Changing sea levels and rising of temperatures.<br />Extreme weather like floods, droughts and tropical storms.<br />Extinction of some species<br />Impact in economy<br />Lack of food and water<br />Diseases<br />Lost of rainforests<br />
  9. 9. 6. Consequences of taking or not taking action against global warming<br />Taking action<br />GLOBAL WARMING<br />“NO”<br />“YES”<br />COST $$$<br /> +<br />GLOBAL DEPRESION<br />FALSE<br />CATASTROPHES<br />COST $$$<br />TRUE<br />Economic<br />Political<br />Social<br />Environmental<br />Health<br />By Greg Craven<br />
  10. 10. BIBLIOGRAPHY<br />Information retrieved from <br /> <br />“Climate Change”<br /><br />April/22/2010.<br /> <br /> “The most terrifying video you’ll ever see”: By Greg Craven<br /><br />April/22/2010<br /> <br />Additional information and pictures retrieved from:<br />Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft Corporation<br />