Saturday, January 9, 2010

Global Warming

The increase in the earth's average temperature is called global warming. The
average facade temperature of the globe has augmented more than 1 degree Fahrenheit since
1900 and the speed of warming has been almost three folds the century long average since 1970. Human actions like discharge of green house gases from smokestacks, vehicles, and burning forests, are the cause for the increase of the global warming. The green house gases permits the sunlight to come to the earth but prevent the sunlight to radiate the heat to the space. In the 21st centuary temperature might be increased about to 3 to 8 degrees.

GLOBAL WARMING CAUSES

the major cause of global warming is the emission of green house gases like carbon dioxide, methane, nitrous oxide etc into the atmosphere. the major cause of the carbon dioxide is the power plants which using fossil fuels for generating electricity. About twenty percent of carbon dioxide emitted in the atmosphere comes from burning of gasoline in the engines of the vehicles. This is true for most of the developed countries. Buildings, both commercial and residential represent a larger source of global warming pollution than cars and trucks. Methane is producing 20% more heat than the carbon dioxide. Methane is obtained from resources such as rice paddies, bovine flatulence, bacteria in bogs and fossil fuel manufacture. When fields are flooded, anaerobic situation build up and the organic matter in the soil decays, releasing methane to the atmosphere. Another reason of the global warming is the deforestation by cutting and burning of trees.

consequences of global warming

The effect of global warming increases the average temperature of the earth. A rise in earth’s temperatures can in turn root to other alterations in the ecology, including an increasing sea level and modifying the quantity and pattern of rainfall. These may cause the climate change in the earth such as heat, floods etc. Other consequences may comprise of higher or lower agricultural outputs, glacier melting, lesser summer stream flows, genus extinctions and rise in the ranges of disease vectors. As an effect of global warming various new diseases have emerged lately. hese diseases are occurring frequently due to the increase in earths average temperature since the bacteria can survive better in elevated temperatures and even multiplies faster when the conditions are favorable. The global warming is expected to cause irreversible changes in the ecosystem and the behavior of animals.

REMEDIAL STEPS

One of the effort to reduce thee global warming is the Kyoto agreement sighned among the different nations. The Algore the former American vice president helps to create aware about the global warming through his documentry "An Inconvenient truth". He has warned people about the ill effects of Global warming and its remedies. Copenhagen summit is the one of the recent and important event happen t for the purpose reducing the global warming. But unfortunately it was a failure. But people are now aware about the ill effect of global warming now.

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