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Global warming is real

Website 1: You can see increasing temperatures all around the globe from now a century and a half ago to now. The Earth's average temperature has risen more than 1 degree Fahrenheit (0.8 degrees Celsius) over the last century, and about twice that in parts of the Arctic. What else can cause the polar ice caps to melt? Models allow scientists to make predictions about the future climate. Basically, models simulate how the atmosphere and oceans absorb energy from the sun and transport it around the globe. ______________________________________________________________________________________________________________________________ Website 2: Atmosphere Carbon Dioxide are higher today than any other time in the last 650,000 years. They are about 35% higher than before the industrial revolution. The concentrations of carbon dioxide and other greenhouse gases in atmospheric samples have been measured continuously since the late 1950s. Since then, carbon dioxide concentrations have increased steadily from about 315 parts per million in the late 1950s to about 385 ppm now, with small spatial variations away from major sources of emissions. Concentrations of carbon dioxide are measured in parts per million, those of methane and nitrous oxide in parts per billion. These are trace constituents of the atmosphere. Together with water vapor, they account for less than 1% of the volume of the atmosphere. And yet they are crucially important for Earth"s climate. ______________________________________________________________________________________________________________________________ Website 3: The temperature keeps rising and lowering at an extreme levels. Sea levels are rising. Natural disasters are happening more often. ______________________________________________________________________________________________________________________________ Website 4: Sea levels are rising up in the last 2,000 years. "The planet is red" in a global map of the change in average surface temperatures, noted Swiss climate scientist Thomas Stocker, co-chair of IPCC Working Group I responsible for this summary at a press conference. "The world is warming." In 2007 the human effect on the climate has grown 40 percent. ______________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________ Websites used- Website 1: http://environment.nationalgeographic.com... Website 2: http://www.skeptic.com... Website 3: http://www.dosomething.org... Website 4: http://www.scientificamerican.com... ______________________________________________________________________________________________________________________________ ______________________________________________________________________________________________________________________________ I am finished and i will hand it over to my opponent.I wish the best of luck.