Environmental pollution is a multidisciplinary science chemistry, physics, agriculture, life sciences, health , medicine , health , etc. In a broader sense it is the study of the sources, reactions , transport , effects and fate of chemical species in the air, water and soil and the effect of human activity on this.Pollutant means a substance in the environment, greater than the natural abundance due to human activity, which ultimately has a detrimental effect on the environment and so on living organisms and the human race . Examples are- lead, mercury, sulfur dioxide , carbon monoxide, etc. Contaminant: A material that does not occur in nature but that is introduced by human activity on the environment , affecting their composition. Pollution classified as a pollutant when an adverse effect is exerted. Several efforts have been made over recent years to maintain a safe and clean environment. However, environmental pollution is getting worst and poses a major threat to the Earth. Environmental pollution is “the contamination of the physical and biological components of the Earth to such an extent that normal environmental processes are adversely affected”. There are five known pollution which is in the form of air, water, land, noise and light.  

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