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Global Warming Global Warming, aside from pollution is one of scientists biggest concerns. Global Warming is caused by the Greenhouse effect. There are 4 steps in the Greenhouse effect process. The first is, sunlight radiates from the sun, through space, to the Earth s atmosphere. The second is, sunlight enters the atmosphere and hits the Earth. Some of that sunlight turns into heat energy in the form of infrared light. Surrounding air and land, which in turn makes the heat warm, absorbs the heat. Third, the greenhouse gases trap infrared rays that is remitted into the atmosphere. Finally, the gas then absorbs the light and is remitted back to the Earth s surface and warms it even more. Another cause of Global Warming is the emissions of greenhouse gases due to the increase in technology that humans have developed. One recent study by the IPCC (Intergovernmental Panel on Climate Change) said that unless governments do something to restrict the emissions of greenhouse gases to a lower level, global temperatures could rise 1.6 to 6.3 degrees Fahrenheit by the year 2100. This would represent the fastest rate of global warming since the end of the last ice age more than 10,000 years ago. With the increased warming of the Earth it could lead to catastrophic events that could endanger living species on our planet. One of these events could be a major drought all around the world. With the warming of the planet, the water on the ground could quickly evaporate causing the rivers and lakes to instantly dry up. This would lead to crops dying from lack of rain, which could lead to other major problems. Some being: prices of foods rising, people suffering from malnutrition, people who struggle with the current prices of foods would have an even harder time with it, which could lead to illnesses. Another event that could occur from global warming is the drastic rise in sea level. As the Earth warms up, it could cause the polar ice caps will start to melt. This would put immense amounts of water into the Earth s oceans. All cities along all the coasts would be flooded from the rise in sea level. This could cause large groups of people to move inland, with that the problem of over-population would pop up everywhere. With the coastal cities under water, this would cause a great economic strain on the rest of the cities throughout the world. Not only the melting of the polar ice caps would raise the sea level. Another would be the heating of the oceans. As the sun s rays hit the water it warms it. As water warms it expands, causing the waters to gradually move inland. If this continues the places that look to be in the most danger are portions of Louisana and Florida. For every foot that the se level rises 100 miles of land of rough terrain, and up to 1000 of flat land. American shorelines have already been replaced with billions of dollers of sand that will just wash away again, as the first. Because on the eroding shores some states such as maine and North Carolina have laws prohibiting people to build on the shores orso far from the shores. The U.S. is not the only country with these problems. They take place all over the world. One example is how about half of the netherlands are under water. Another has to do with the Dutch. They have 250 miles of dikes and about 120 miles of dunes to help hold back the erosion of the shores. Another effect of Global Warming would also cause extreme weather. As the ocean water heats Today, action is occurring at every level to reduce, to avoid, and to better understand the risks that are associated with global warming. On a national level, the U.S. Global Change Research Program (USGCRP) coordinates the world's most extensive

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