Sultan althani English 7b 5 March 2012 Selected source list for environment media project Green house gasses Carbon dioxide is released into the atmosphere by the burning of solid waste, wood and wood products, and fossil fuels (oil, natural gas, and coal). The temperatures change naturally over the past 50 years the average global temperature has increased at the fastest rate in recorded history. And experts think the movement is increasing the 10 hottest years on record have all occurred since 1990. Scientists say that unless we control global warming emissions, average U.S. temperatures could be 3 to 9 degrees higher by the end of the century. The world will get hotter and hotter snow in the Antarctica will melt and the water will go to the sea and sea level will rise and all of u s will drown and most animals that live on ice will die like the polar bear etc wont find ice to hunt and live on and now there are not a lot left. • Carbon dioxide is released into the atmosphere by the burning of solid waste, wood and wood products, and fossil fuels (oil, natural gas, and coal). Many things cause global Warming. The causes are split up into two groups, man-made or anthropogenic causes, and natural causes. Man-made Causes Pollution is one of the biggest man-made problems. Burning fossil fuels is one thing that causes pollution. Fossil fuels are fuels made of organic matter such as coal, or oil. When fossil fuels are burned they give off a green house gas called CO2. For over the past 200 years, the burning of fossil fuels, such as coal and oil, and deforestation have caused the concentrations of heattrapping "greenhouse gases" to increase significantly in our atmosphere. These gases prevent heat from escaping to space, somewhat like the glass panels of a greenhouse. Greenhouse gases are necessary to life as we know it, because they keep the planet's surface warmer than it otherwise would be. But, as the concentrations of these gases continue to increase in the atmosphere, the Earth's temperature is climbing above past levels. According to NOAA and NASA data, the Earth's average surface temperature has increased by about 1.2 to 1.4ºF in the last 100 years. The eight warmest years on record (since 1850) have all occurred since 1998, with the warmest year being 2005. Most of the warming in recent decades is very likely the result of human activities. Other aspects of the climate are also changing such as rainfall patterns, snow and ice cover, and sea level.