The Greenhouse Effect

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The Greenhouse Effect

The Greenhouse Effect

Issue Statement
While some people believe the earth's climatic changes are due to the fact that the
universe is getting older, others believe it is due to the greenhouse effect.
 The greenhouse effect is a naturally occuring phenomenon that is responsible for trapping heat near the earth's surface and keeping the planet warm. It is called the greenhouse effect because the way it works is similar to the way in which a green house functions. In a greenhouse sunlight passes through the transparent roof and walls and strikes the objects inside- plants, flowerpots, tables, and so forth. These objects absorb energy from sun, become warmer, and then give off energy themselves in the form of heat. Only a little of this heat energy passes out through the glass, much of it is trapped in the greenhouse, raising the temperature inside.
In some ways, the earth functions rather like a greenhouse except on a much larger scale.
Although the greenhouse effect has only recently been in the news, is nothing new in th history of our planet, has played major role in making life on earth possible. Without the greenhouse effect, the earth would be too cold for living thing to survive. The big question today is If greenhouse effect is natural, why are people so worried about it. Is soemthing good turning bad? Up until about 150 years ago the compostion of the earths atmosphere had remianed relatively unchanged for several thousand years. Since mid 1800s certain human activities have been changing the heat trappin ability of the atmospher dramatically, as a result more heat is being trapped by the atmosphere. Scientists have been anticipating this strengthening of the greenhouse effect for sometime, and that it will lead to a worldwide increase in temperature. This is come true because the world is getting warmer. Global warming can be expected to change the earth's climate dramatically and in a relatively short time. As temperatures increase, experts predict that weather patterns will be disrupted worldwide, the glaciers and polar ice caps will, melt, and that sea levels will rise. Global warming could change the atmosphere so much and so fast that all sorts of plants and animals might soon be in danger os extinction. The greenhouse effect may be the most serious environmental problem the human race has ever experienced, for this reason scientists around the world are working hard to acheive a better understanding of the greenhouse ...

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