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People Become Overly Dependent on Technology

By MRMOSTAFA Mar 24, 2013 508 Words
Environmental pollution and methods for treatment

Pollution is the introduction of contaminates into the natural environment that cause adverse change , pollution can taken the form of chemical substances or energy such as noise , heat and light. The components of pollution can be either foreign substances, enrrgies or natural occurring contaminates . pollution is often classed as point source or non point source pollution. The BlackSmith issues an annual list of the world's worst ploouted places . in the 2007 issues the ten top nominess are located in Azerbaijan, China, India, Peru, Russia, Ukraine, Zambia. There are forms of pollution , which surround us from all directions . Firstly, Air pollution :- the release of chemicals and particulates into the atmosphere common gaseous pollutants include carbon monoxide, sulfur dioxide, chlorofluoro carbons and nitrogen oxides produced by industry and motor vehicles . photochemical ozone and smog are created as nitrogen oxides and hydrocarbons react to sunlight . secondly, light pollution :- include light trespass, over –illumination and astronomical interference . Thirdly, noise pollution :- which encompasses road way noise, air craft noise, industrial noise as well as high – industrial sonar. Fourthly, visual pollution:- which can refer to the presence of over head power lines , motor way bill boards , scarred landforms ( as form strip mining) ,open storage of trash, municipal solid waste or space debris . fifthly, water pollution:- by the discharge of untreated sewage , release of waste and contaminates into surface waters, discharges of untreated domestic sewage, and chemical contaminates into surface runoff flowing to surface waters . finally, thermal pollution:- is temperature change in natural water bodies caused by human influence , such as use of water as coolant in a power plant, also radio active contaminates resulting from 20th century activities in atomic physics , such as nuclear power generation and nuclear weapon research , manufacture and deployment. Effects of pollution on human health , adverse air quality can kill many organisms including humans , ozone pollution can cause respiratory disease, cardiovascular disease , throat inflammation, chest pains and congestion, water pollution causes approximately 14,000 deaths per day, mostly due to contaminates of drinking water by untreated seage in developing countries. An estimated 700 million Indians have no access to a proper toilet and 1,000 Indian children die of diarrhoeal sickness every day, Nearly 500 million Chinese lack access to safe drinking water , 656,000 people die prematurely each year in china because of air pollution . In India , air pollution is believed to cause 527,700 fatalities a year , studies have estimated that the number of people killed annually in the us could be cover 50,000. Oil spills can cause skin irritations and rashes. Noise pollution induces hearing loss, high blood pressure, stress and sleep disturbance. Mercury has been linked to developmental deficits in children and neurologic symptoms. Older people are majorly expose to disease induced by air pollution. Those with heart or lung disorders are under additional risk. Children and infants are also at serious risk. Lead and other heavy metals have been shown to cause neurological problems. Chemicals and radioactive substance can cause cancer and as well as birth defect.

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