What is pollution? We all know that it is the contamination of the surroundings(air, water,land, sound).
So how do our surroundings get polluted? Pollution can be man made or natural. Let's use some general incidents which will help us to answer this question.
Well, when we step out of our house in the morning, we often find motor vehicles moving in the streets, honking. The suspended waste materials or the pollutants emitted by these vehicles are a source of air pollution. Other sources of man made air pollution are- burning wood and fossil fuel, smoke from the factories, foul smell and gases emitted from garbage littered outside the dustbins etc.
In the roads of busy cities often our ears get disturbed with the undesirable sounds known as Noise. Noise above 80 decibels is intolerable to our ears and is painful. Honking, watching television and listening to music in large volumes, mahines used in factory sites etc are some examples of noise pollution which we encounter in our daily lives.
The chemicals and fertilisers used by farmers for production of a better yield can become a source of water and soil pollution. The fertilisers and other chemicals given to the crops, seep into the soil and loses the fertility of the soil. During rains these chemicals are washed by and are deposited in the water bodies thereby polluting them.
These are some of the examples which show us that human intervention in the surrounding is polluting it. Human activities are not only affecting the environment but are also harming the habitat and lives of many organisms and animals. Global Warming caused by the green house effect( increase in the carbon dioxide level because of human intervention) is melting the glaciers so that the animals living in the polar region are finding it difficult in living there. Pollution of water bodies by chemicals are harming the organisms living in them. These chemicals make it suitable for algae to grow in them which decrease the biological oxygen demand of the other living organisms living in those water bodies. The above examples are a result of human intervention. Now in this present generation when the world's population is increasing, naturally their demands are also increasing. So what is the result going to be? probabilities are - more global warming that even air conditioners would be unable to keep us cool, increase cases of natural phenomena and disasters. Now that we know what are the consequences going to be ,so why not take action. I know that many activities are been taken to save our environment but an active participation by everyone is required because then only we can be successful in making a pollution free earth.