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Submitted By alexg15
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Aleksey Golubok
Friday 1 PM
10/8/15
Global Warming and Climate Change
I. According to data from NASA, the overall temperature in the earth’s atmosphere has been increasing since 1880. Most of this warming, however, has occurred since 1970, with the 20 warmest years having occurred since 1981 and with all 10 of the warmest years occurring in the past 12 years. This phenomena, known as global warming or climate change, is caused by the greenhouse effect. Gases such as carbon dioxide, chlorofluorocarbons, and other pollutants let in light, but keep heat from escaping, similar to the glass walls of a greenhouse. This is problematic because it is changing the climate faster than some livings can adapt and a new and unpredictable climate poses unique challenges to all life. Global Warming is a major issue that has effects on the environment, people, and the world, and if not stopped soon, the results will be disastrous.
II. Scientific evidence for global climate change A. Temperature of earth’s atmosphere rising since 1880
1. Supports the greenhouse effect theory, since humans have been releasing more heat trapping emissions with every passing year B. Warming of earth’s oceans
1. Oceans have absorbed much of the increased heat, causing them to become warmer C. Rapid rise in sea level 1. Sea level has risen double in last decade what is has in last century
III. Causes of global climate change A. Increased emission of greenhouse gases 1. Main cause is the human expansion of the greenhouse effect
2. As a result, heat attempting to leave earth gets trapped in the atmosphere, warming the planet
IV. Environmental, sociopolitical, and economic impacts of global climate change
A. Environmental: earlier leafing of trees and plants, shrinking ice sheets, declining arctic sea ice, changes in precipitation that negatively affect water resources,

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