Pollution is introducing contaminants in the natural environment that affect it adversely.  It is the major issue of the present century as it is leading the world towards the situation that is influencing every single living being on Earth. Pollution can be in the form of energy and chemical substances. Air pollution, water pollution, light pollution, radioactive contamination, thermal pollution and soil contamination are the major forms of pollution. 
Major contributors of pollution are emission of toxic gases from factories and vehicles, toxic and unprocessed toxic water waste from manufacturing companies, untreated discharge of wastes of factories and households in lakes and rivers, oil spilling from ships, burning of household garbage and many more. Not only big companies but every individual is contributing in increasing pollution.
There are many things that we can still do to make our environment healthy again. We all must stand together to stop the pollution before the damage become permanent. 
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