Water pollution is the contamination of water bodies (e.g. lakes‚ rivers‚ oceans and groundwater). Water pollution affects plants and organisms living in these bodies of water; and‚ in almost all cases the effect is damaging not only to individual species and populations‚ but also to the natural biological communities. Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful compounds. Contents [hide] • 1 Introduction
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Wastewater Wastewater is any water that has been adversely affected in quality by anthropogenic influence. It comprises liquid waste discharged by domestic residences‚ commercial properties‚ industry‚ and/or agriculture and can encompass a wide range of potential contaminants and concentrations. In the most common usage‚ it refers to the municipal wastewater that contains a broad spectrum of contaminants resulting from the mixing of wastewaters from different sources. Sewage is correctly the
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Daniel Beyene English 101 Instructor: Dela-Cruz 02/27/2012 Heroism Roger Rosenblatt in his essay “The man in the Water” describes how the heroic passenger in the air crash was determined to put his life on the line to save others. The man in the water dedicates all his strength to save the others in the water‚ handing over the lifeline and rope each time it was given to him. Even though there were other three acknowledged heroes at the scene‚ Rosenblatt focuses on the anonymous man
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Surface Water Pollution Freshwater makes up less than three percent of earth’s water‚ but is the source of virtually all drinking water.55 percent of that water comes from reservoirs‚ rivers‚ and lakes‚ These sources‚ called surface water‚ are vulnerable to pollution discharged out of pipes and precipitating out of the air but the primary source of their pollution today is runoff‚ pollutants washing off the land. These nonpoint or scattered sources are not easily traceable. fertilizers used
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The causes of water pollution Water pollution comes from a myriad of sources‚ both natural and from human activity. The most destructive causes of water pollution are man made‚ however. The largest sources include: The burning of coal in power plants emits ash particulates that contain toxic metals like arsenic and lead. Coal and petroleum also contain sulfur compounds. Combustion generates sulfur dioxide‚ a toxic gas‚ and oxides of nitrogen. When emitted from exhaust stacks‚ these two compounds
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SOME OF THE MAIN PROBLEMS OF LEXICOLOGY 1 lexicology is the study of words-their menanigs and relationships. * English vocabulary is one of the most extensive amongst the world’s lang.contains an immense number of words of forerign origin. * lexicology has to study the etymology of word‚e.g.their origin‚ their development and function * And English is lang.which had changed a lot in a short period of time * So‚ lexicology has to deal with all the changes in grammar and the vocabulary
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Water pollution is any chemical‚ biological or physical change in the quality of water which has a harmful effect on any living thing that drinks‚ uses‚ or lives in it. If and when individuals drink polluted water it can cause serious effects. Water pollution can also make water unsuited for the desired use. The main cause of water pollution is made by humans. Point and non point sources are the two sorts of sources. Point sources discharge pollutants at specific locations such as pipelines or sewers
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WATER CONSERVATION INTRODUCTION: Water is essential for life on earth. Water is needed for growing food‚ keeping ourselves clean‚ generating power‚ controlling fire and most importantly to stay alive! This list is simply non-ending. This shows that water is an integral part of our daily life and we are heavily dependent on it. Water conservation – Refers to reducing the usage of water and recycling of waste water for different purposes such as cleaning‚ manufacturing‚ and agricultural irrigation
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Water Crisis in UAE Introduction Water crisis refers to the situation where the available water within a geographical location cannot meet the water needs of the population in that location. This prevalent situation has drawn considerable attention in most countries due to its severity to humanity. Because of the tripling of the population in the 21st century‚ the demand for water has remained considerably higher than the available clean and safe water. Despite the fact that the earth is covered
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Program: Lincoln – BBA Class: 12BLBA03 Lecturer: Luan Thanh Nguyen Subject: Marketing Management 2 Ten Points Analysis of Facebook Presented By ThanhThi Kim Nguyen –121101087 TrangThiHuyen Tran – 121101119 Lam Quoc Truong – 121101098 Phuong Nhat Le – 121101123 Truc Tran Thanh Ngo – 121101093 October‚ 2013 Abstract The growth and popularity of online social networks has created a new world of collaboration and communication. More than a billion individuals
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