Since 1870, global sea levels have risen by about 8 inches. From 1965 through 2011, U.S. cumulative emissions of carbon dioxide were 255 billion metric tons. (http://www.energytrendsinsider.com/2012/07/02/global-carbon-dioxide-emissions-facts-and-figures/ ). This source is from consumer energy report which is an article about global carbon dioxide emissions and which shows statistics that proves global warming is a big problem. Global warming is the increase of Earth's average surface temperature due to greenhouse gases, such as carbon dioxide emissions from burning fossil fuels or from deforestation, which trap heat that would otherwise escape from Earth. It is a major problem all around the globe because sea level rise is accelerating, the number of large wildfires is growing, dangerous heat waves are becoming more common, extreme storm events are increasing in many areas, and more severe droughts occurring at certain places. Global warming impacts not only our health but also the environment and our communities. One main important evidence that supports that global warming is affecting our planet is climate change throughout the world. Current carbon dioxide level has been about 380+ parts per million which went up about 100 parts per million from 1950’s carbon dioxide level. (http://climate.nasa.gov/evidence/). This is a very reliable source because it is from NASA having the evidence of global warming affecting the world. Because of carbon dioxide levels risen up so high is affecting the climate all over the world. Temperature is risen up in all over the countries where it is going to the extreme. These temperatures that have been recorded in the recent years has never been that high in the past years. For example in United States in 2013 the highest temperature recorded was in Overton, NV which was 122 F. (http://www.wunderground.com/climate/extremes.asp). This source is from weather record extremes where all the record for temperature is...
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