Monday, July 27, 2009

We should save the environment




Environmental pollution is a global problem and is common to both developed and developing countries. Environmental pollution is caused primarily by humans that introduce extraneous substances into the environment thereby causing unfavourable changes. The decline in environmental quality as a consequence of pollution evidenced by loss of vegetation cover, biological diversity, high concentration of harmful chemicals in the atmosphere and threats to life support system. The immediate effects of environmental pollution could be seen as health problem by affecting human health and lives; economic problems by affecting the value of human property and materials; ecological problems by disturbing eco-balance, interfering with conservation of natural resources etc.
We continuously face pollution such as air pollution, sound pollution, soil pollution, water pollution etc. The major sources of air pollution are solid and liquid wastes, heat and gas emission, gas exhausted from vehicles such as carbon dioxide, carbon monoxide, sulphurdioxide, ozone gas, nitrogen oxides, aeroplane gases, and gas burning, oil burning, coal burning, fuel and cow dung burning, refuse disposal, forest fire, radio active emission etc. The major sources of sound pollution are hydraulic horns of buses, trucks and other types of vehicles, unregulated loudspeakers, the noise from construction work. Soil pollution is caused by human wastes, municipal solid waste and industrial waste, pesticides and fertilizers. Besides, polythene and many other plastic goods are degrading the fertility of soil.
Smog is created by burning coal and heavy oil that contain sulfur impurities in power plants, industrial plants, etc. The smog consists mostly of a mixture of sulfur dioxide and fog. Suspended droplets of sulfuric acid are formed from some of the sulfur dioxide, and a variety of suspended solid particles. This smog is common during the winter in many cities.
The world is everybody's home and nobody likes living in a dirty home. Together, we can make it a cleaner, healthier and more pleasant place to live in.

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