Global Warming Essay

2853 Words Oct 31st, 2014 12 Pages
Graduation Project Paper
Class of 2010
May 29, 2009
Global Warming
The most important problem that concerns for many people all over the world is global warming. Global warming is defined as the increase of the average temperature on Earth. As the Earth is getting hotter, disasters like hurricanes, droughts and floods are getting more frequent (by Karin Lindinger). Every problem has its own causes. Scientists have determined that a number of human activities are contributing to global warming by adding excessive amount of greenhouse gases to the atmosphere. Besides, global warming by natural and man-made causes. These causes above have the serious consequences. The effects of the global warming are of concern both for the environment
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Coal accounts for 93% of emissions from the electric utility industry. US Emission Inventory 2004 Executive Summary page 10. Coal emits around 1.7 times as much carbon per unit of energy when burned as does natural gas and 1.25 times as much as oil. Natural gas gives off 50% of the carbon dioxide, the principal greenhouse gas, released by coal and 25% less carbon dioxide than oil, for the same amount of energy produced. Coal contains 80% more carbon per unit of energy than gas does, and oil contains about 40% more. For the typical US household, a metric ton of carbon equal about 10,000 miles of driving at 25 miles per gallon of gasoline or about one year of home heating using natural gas fired furnace or about four months of electricity from coal-fired generation. About 33% of US carbon dioxide emissions come from the burning of gasoline in internal-combustion engines of cars and light trucks (minivans, sport utility vehicles, pickup trucks, and jeeps). US Emissions Inventory 2006 page 8, Vehicles with poor gas mileage contribute the most to global warming. For example, according to the E.P.A.’s 2000 Fuel Economy Guide, a new Dodge Durango sports utility vehicle (with a 5.9 liter engine) that gets 12 miles per gallon in the city will emit an estimated 800 pounds of carbon dioxide over the same distance of 500 city miles. In order words for each gallon of gas a vehicle consumes, 19.6 pounds of carbon dioxide are emitted into the air. A new Honda

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