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Word Count: 473
Pollution is a major hazard that causes many problems to the people and environment Pollutionis the introduction of contaminants into a natural environment that causes instability disorder harm or discomfort to theecosystem It is divided into three air water and noise Pollutants are the elements of pollution Air pollution is the introduction of chemicals particulate matter or biological materials that cause harm to living organisms or environment into the atmosphere The main pollutants of air pollution are sulfur oxides nitrogen oxides carbon monoxide and carbon dioxide The main causes of air pollution are the smoke from power plants motor vehicles wildfire and fumes from paint and spray The health effects caused by air pollution include difficulty in breathing wheezing coughing and aggravation of existing respiratory and cardiac conditions The World Health Organization states that 24 million people die each year from air pollution The main environmental effect of air pollution is the depletion of ozone layer It can be controlled by devices such as particulate control Scrubbers NOx control and VOC abatement Water pollutionis the contamination ofwaterbodies Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful compounds It affects the rivers lakes oceans and drinking water The main water pollutants are detergents food waste chemical waste and heavy metals from motor vehicles The sources of water pollution are contaminants that enter the water supply from soils or groundwater systems and outfalls from factories and refineries The health problem from water pollution includes poor blood pressure vomiting skin lesions and damage to the nervous system Water pollution can be controlled by many ways Industrial waste water can be controlled by cooling ponds and towers Domestic sewage is treated by centralized sewage treatment plantsNoise pollutionis excessive displeasing human animal or machine-created noisethat disrupts the activity or balance of human or animal lifeThe source of most noise is mainly construction pubic events motor vehicle noise aircraft noise
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