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Global Warming Fact or Fiction For many years now the subject of global warming has been the cause of heated debates throughout the world The theory is based on the idea that greenhouse gasses are accumulating in Earths atmosphere as a result of human activities causing surface air temperatures and subsurface ocean temperatures to rise Debates have covered its causes and effects and whether or not it actually exists and is a true threat to the planet I for one do not believe that global warming is a real issue but one created by environmentalists and scientists with a need for funding for additional and continuing research I believe that research shows while there may be cyclical changes in temperature and weather on our planet they occur naturally and not affected by man in any real way One of the most popular theories being debated is the greenhouse effect which is caused by greenhouse gasses - naturally occurring gasses such as water vapor methane oxygen and carbon dioxide As the Earth is a living planet it is constantly undergoing change Plate tectonics continue to change the face of the planet The sea floor is still spreading and we still have earthquakes and volcanoes Convection currents created by the tremendous heat and pressure at the core of the Earth move the plates These processes release tremendous amounts of carbon dioxide and water vapor greenhouse gasses We know that these processes have been taking place since the beginning of time and according to the geologic record there have been numerous greenhouse and icehouse ages Additionally we know that the motion of the Earth known as the Milankovitch cycles also affect the Earths atmosphere These Global Warming3 cycles - the Earths elliptical orbit the tilt of the Earths axis and the procession of the equinoxes - all have an effect on the Earth in various ways The Earths orbit brings the planet closer to the Sun at one
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