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The Silent Unnatural Persuasive Speech

Satisfactory Essays

Zach Pickerell
Mrs. Effler
English 102
January 28, 2016
The Silent Destroyer? Global Warming has silently crept into our society today because of big business, lack of technology, and greed. And now with a new generation of citizens who understand what we have been doing to our earth have to stand up and do what is right. Global Warming refers to the increase in the earth’s average temperature induced by human activity. Most discussions on Global Warming today show similarities between an increase in global temperature and the increase in carbon dioxide, nitrous oxide, methane, and chlorofluorocarbons in the atmosphere. Human activity increases the amount of these gases in the atmosphere and, as a result of the greenhouse effect, increases …show more content…

Scientist know the earth has undergone a series of ice ages that last for millions of years. We are in the Cenozoic period, which has seen ice ages from 36, 15, and 3 million years ago, with the most recent glacier development peaking about 20,000 years ago during the Ice Age. Scientists believe that during the first two steps of this cooling, the yearly average air temperature in North America dropped by about 12 degree Celsius, a shift that would have had immediate effects on the plants, animals, and ecosystems of the continent. Scientists also feel confident that the movements of continental plates affects climate by altering the contours of the earth and seabed. By altering the earth’s surface, plate tectonics might also affect the concentration of carbon dioxide in the atmosphere. For example, a volcanic explosion will create more carbon dioxide through a degassing process, but will cut down on emissions by burying organic material that normally releases carbon dioxide as it decays. Plate tectonics might also alter greenhouse gas concentrations when mountains are created, exposing silicate rocks which also release carbon dioxide through

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