Pollution is the introduction of contaminants into the natural environment that cause adverse change.Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants. Pollution is often classed as point source or nonpoint source pollution.
Pollution is nothing but "too much of something at wrong place" and environmental pollution is generally defined as the unfavorable alternations of our surroundings through the various actions of man himself. The undesirable and excessive substances that are released As., the by-products of man's actions, can affect air, water and land and adversely and alter the natural quality of our environment. Substances that are responsible for the alternations of environment are called pollutants and the total chain of actions as "environmental pollution". Hence it is nobody else than man himself is the real cause of environmental pollution. Environmental pollution can be well understood if we study its sources and effects. There are pollutions of air, water, soil, noise and radioactive wastes. The study of each type will give the real picture.
Pollution is contamination of land, air and water. Motor vehicles are in abundance in big cities as well as there are numerous factories and industries also. Motor vehicles emit carbon monoxide and hydrocarbons. The factories contaminate air by smoke. Noise of factories results in sound pollution and waste of factories pollutes water and land. Delhi is third most polluted city in the world. Pollution here is three times the permissible limit. It may be nine times in eight years if some efforts are not made. Plastic is another big nuisance causing pollution. It never decays. If we burn it. It pollutes air. If we dump it into river or sea it pollutes water. Chemical fertilizers used by farmers are another source of pollution to land and water. In...
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