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Short Paragraph on Water Pollution - Important Indiahuman population is increasing day by day and thus their needs and competition leading pollution to the top level. in 1984, a central ganga authority was established by the government to start the ganga action plan in order to control the ganga water pollution. we all should know the causes, effects and preventive measures of the water pollution to make our lives better. pollution is a major global problem which requires ongoing evaluation and revision of water resource policy at all levels (international down to individual aquifers and wells). local governments use a variety of storm water management techniques to reduce the effects of urban runoff. pollution not only affects human life but also the rest of the animal kingdom and the ecosystem in general. waters and groundwater are the two types of water resources. the whole water is getting polluted through many sources such as urban runoff, agricultural, industrial, sedimentary, leeching from landfills, animal wastes, and other human activities. retention basins tend to be less effective at reducing temperature, as the water may be heated by the sun before being discharged to a receiving stream. the oceans: around 80 percent of ocean pollution enters our seas from the land. our earth is covered with water (almost 70% of total) so a little change in it could affect lives worldwide. river, where there is less clean water to disperse it. of pollution is that it brings costs of its own that. we need to follow some drastic changes in our habits to save the earth water as well as continue the possibility of life here. source pollution at a shipyard in rio de janeiro, brazil. pollution expert derides un sanitation claims by juliette jowit, the guardian, 25 april 2010. control of urban runoff involves reducing the velocity and flow of storm water, as well as reducing pollutant discharges. a common cause of thermal pollution is the use of water as a coolant by power plants and industrial manufacturers. analysis/diagnosis decision information system (caddis) - epa guide for identifying pollution problems; stressor identification. pollution that enters the environment in one place has an. analysis of groundwater contamination may focus on soil characteristics and site geology, hydrogeology, hydrology, and the nature of the contaminants. 1969 united nations report defined ocean pollution as:Introduction by man, directly or indirectly, of substances or energy. rate or give feedback on this page and i will make a donation to wateraid. sewage to force governments and water companies to clean up. source water pollution refers to contaminants that enter a waterway from a single, identifiable source, such as a pipe or ditch. are two main ways of measuring the quality of water. sources of surface water pollution are generally grouped into two categories based on their origin.
Introduction to water pollution essay
Water pollution - Wikipediafeed our rivers and supply much of our drinking water. the causes of water pollution predominantly include washing of agrochemicals into water bodies, spillage of fuels and other chemicals, improper disposal of various types of waste as well as synthetic detergents used both domestically and industrially, natural processes such as volcanic eruptions or biological processes, and so on (agarwal 38). water pollutants include:Disinfection by-products found in chemically disinfected drinking water, such as chloroform. is typically referred to as polluted when it is impaired by anthropogenic contaminants and either does not support a human use, such as drinking water, or undergoes a marked shift in its ability to support its constituent biotic communities, such as fish., most selfishly, is why pollution should matter to all of us. pollution from runoff can be controlled by storm water management facilities that absorb the runoff or direct it into groundwater, such as bioretention systems and infiltration basins. let your kids participate in some creative activities in their schools and colleges to increase awareness about the water pollution in the society. swallow polluted water—yet sewage can have other harmful effects. we think of ocean pollution, huge black oil slicks often spring. pollution essay 4 (250 words)fresh water is the most important source of life on the earth. main industries causing water pollution are sugar mills, distillery, glycerine, tin, paints, soap spinning, rayon, silk, yarn, etc which are discharging poisonous wastes."issues: water" – guides, news and reports from us natural resources defense council.., may focus on water quantity control, while others focus on improving water quality, and some perform both functions. water pollution is the mixing of foreign substances by means of organic, inorganic, biological and radiological in the water degrading the quality and usefulness of water. most of the important animals and plants species have been lost because of the water contamination., water pollution is indeed a very serious concern because it not only has an impact on health and but also can have negative effects on various industries and agriculture. is another good example of how pollution can affect us all. samples of the water and measure the concentrations of different. industries that generate wastewater with high concentrations of conventional pollutants (e. some of these facilities can install a pre-treatment system to remove the toxic components, and then send the partially treated wastewater to the municipal system. storm water washed off of parking lots, roads and highways, called urban runoff, is sometimes included under the category of nps pollution. clean water is very necessary for fulfilling the purpose of drinking, bathing, washing, power generation, irrigation of crops, disposal of sewage, manufacturing processes and many more. institution of oceanography: investigating ocean pollution: scripps scientists research the effects of pollution on marine life in san diego bay, california. the water we drink daily looks very clear however contains verities of microscopic pollutants floating in it. the cwa definition of point source was amended in 1987 to include municipal storm sewer systems, as well as industrial storm water, such as from construction sites.↑ in our backyard: a guide to understanding pollution and its effects by travis p.. in a sense, our oceans, rivers, and other inland waters are.
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Water pollution: An introduction to causes, effects, solutions
Essay on Water Pollution for Children and Studentsasit biswas, challenges a lack of progress in providing clean water to developing countries. highest level of water pollution is caused by the pollutants come from agriculture field because of the high use of fertilizers, insecticides, and pesticides to enhance the production of crops. the degradation of drinking water needs an urgent basis prevention method which is possible by the proper understanding and support from the end of each and every person living on the earth. pollution affects the entire biosphere – plants and organisms living in these bodies of water.. but how can we measure water pollution when we cannot see it? it is therefore highly important to devise methods to reduce the level of water pollution that we are currently facing. water pollution is a result of changes in its quality and such changes can occur due to natural reasons or as a consequence of one or more activities by humans (goel 1). water from rivers, and many pump polluted waters back in their. waste products from many human activities are spoiling the whole water and decreasing the amount of oxygen available in the water. other hydrocarbon particles get settled down through rain water from air to ocean or sea water. Find paragraph, long and short essay on Water Pollution for your Kids, Children and Students. one example of a group of bio-indicators are the copepods and other small water crustaceans that are present in many water bodies. containing nutrients--nitrates and phosphates—which are found in storm water runoff from agriculture, as well as commercial and residential use. leaked oil from the land or rivers, oil transport through ships, ship crashes, etc flows to the sea or ocean and affecting whole water. forms of water pollution are very obvious: everyone has seen tv. this form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds. standard methods for the examination of water and wastewater (22nd ed. is no easy way to solve water pollution; if there were, it. by its very nature, groundwater aquifers are susceptible to contamination from sources that may not directly affect surface water bodies, and the distinction of point vs. non-point source pollution contributes highly to the water pollution which is very difficult and expensive to control. pollution refers to the mixing of contaminants or pollutants in to the water bodies (sea, lakes, rivers, oceans, groundwater, etc) through direct or indirect discharges causes environmental degradation and affects whole biosphere (human beings, animals, plants and organisms living in water). high level of water pollution is done due to the chemicals coming out of the agricultural usage of fertilizers, insecticides and pesticides. the ever increasing human population enhances the demand of more water for purposes like drinking, washing, performing industrial processes, irrigating crops, arranging swimming pools and other water-sports centres..↑ sewage treatment in the uk: uk implementation of the ec urban waste water treatment directive. chemicals in the ink could very quickly have an effect on the quality of the water.: aquatic ecologyaquifersenvironmental sciencewater and the environmentwater chemistrywater pollutionwater supplyhidden categories: webarchive template wayback linkscs1 maint: uses authors parameterpages containing links to subscription-only contentwikipedia indefinitely semi-protected pagesuse mdy dates from january 2012articles containing video clips. water pollutants cause harm to human-beings, animals, trees and other constituents of environment.
Water Pollution Essay Sample - JetWriterssources of water pollution are:Industry: effluents from the factories. pollution essay 3 (200 words)the level of fresh drinking water is becoming less day by day on the earth. it has been suggested that water pollution is the leading worldwide cause of deaths and diseases, and that it accounts for the deaths of more than 14,000 people daily. source pollution refers to diffuse contamination that does not originate from a single discrete source. such pollutants are altering the physical, chemical, thermal, and biological characteristics of the water and adversely affecting the lives inside as well as outside the water. with sanitary sewer overflows or combined sewer overflows employ one or more engineering approaches to reduce discharges of untreated sewage, including:Utilizing a green infrastructure approach to improve storm water management capacity throughout the system, and reduce the hydraulic overloading of the treatment plant. stormwater effects handbook: a toolbox for watershed managers, scientists, and engineers.↑ for a summary, see "agricultural chemicals in iowa's ground water, 1982–95. brayton point power station in massachusetts discharges heated water to mount hope bay. in order to prevent the water pollution all the industries should follow standard norms, strict laws should be enforced by the pollution control board, arrangement of proper sewage disposal facilities, establishment of sewage and water treatment plant, arrangement of sulabh type toilets and may more. water generated by power plants or manufacturing plants may be controlled with:Cooling ponds, man-made bodies of water designed for cooling by evaporation, convection, and radiation. means that whoever causes pollution should have to pay to clean it. water polluted with sewage, they formed a group called surfers. use are gradually washed by rain into the groundwater or surface.: minerals above a certain level in the soil or present in the rocks, mix with water and results in pollution. of water deteriorates the chemical, physical, and biological characteristics of the water which is very harmful to the human beings, animals and plants all over the world. impact on world's rivers 'threatens water security of 5 billion' by adam vaughan, the guardian, 29 september 2010. of toxic metals in water may cause skin disease, dysentery, amoebiasis, anorexia, etc.) of raw sewage each day; a new waste water plant on the us-mexico border, completed in 2007, substantially. more substances have built up in water to such an extent that they. continents to pass laws that will make pollution harder and the. take individual action to help reduce water pollution, for example,By using environmentally friendly detergents, not pouring oil down. an example is silt-bearing surface runoff, which can inhibit the penetration of sunlight through the water column, hampering photosynthesis in aquatic plants. they include the 1976 bathing water directive (updated 2006), which seeks to ensure the quality of the waters that people use for. coliform bacteria, which are not an actual cause of disease, are commonly used as a bacterial indicator of water pollution. as per the report of central pollution control board, ganga is the most polluted river in india now which was very famous earlier for its flexibility of self purifying capacity and fast-flowing river.^ fact sheet: 2004 national water quality inventory report to congress (report).
Stop water pollution essay in englishare point sources of water pollution, but quite a lot of. water is held in underground rock structures known as aquifers,Which we cannot see and seldom think about. water pollutants are eventually carried by rivers into the oceans. the movement of the plume, called a plume front, may be analyzed through a hydrological transport model or groundwater model.. the shearwater study is quoted in biological oceanography: an introduction by carol lalli et al. and then fall back to earth as rain, entering seas, rivers,And lakes and causing water pollution. percent of oil pollution at sea comes from routine shipping and from the.: above: point-source pollution comes from a single, well-defined place such as this pipe. household or business not served by a municipal treatment plant may have an individual septic tank, which pre-treats the wastewater on site and infiltrates it into the soil. one study of 450 shearwaters in the north pacific,Over 80 percent of the birds were found to contain plastic residues in their stomachs. industries generating large volumes of wastewater typically operate their own complete on-site treatment systems."troubled waters" - video from "strange days on planet earth" by national geographic & pbs (us). water pollution is done by the people of all over the world because of increasing demands and competitions of luxuries life.. clean water act (cwa) defines point source for regulatory enforcement purposes. obvious than surface-water pollution, but is no less of a problem. in addition to the acute problems of water pollution in developing countries, developed countries also continue to struggle with pollution problems. pollution has many different causes and this is one of the reasons why it is such a. solvents, which are dense non-aqueous phase liquids, may fall to the bottom of reservoirs, since they don't mix well with water and are denser. down harmlessly in the environment: 90 percent of sewage is water. substance is released and how big a volume of water it is. dangerous chemicals (in the form of solid, liquid or gases) mixes with water and make it unsafe for living bodies. about the types, causes, and effects of water pollution and what we can do to solve the problem. pollution photos: from our friends at the uk rivers network, a collection of public-domain (copyright free) pollution photos you can use in school and college projects. pollution – large visible items polluting the water – may be termed "floatables" in an urban storm water context, or marine debris when found on the open seas, and can include such items as:Trash or garbage (e., water pollution is all about quantities: how much of a. nps pollution is often the cumulative effect of small amounts of contaminants gathered from a large area. they can select any water pollution essay according to the need and requirement:Water pollution essay 1 (100 words)water pollution has become a continuous increasing problem on the earth which is affecting the human and animal lives in all aspects.Thesis on how a
Water Pollution Essays Written By Students, Purchase Academicincreasing human population causes rapid industrialization and unplanned urbanization which are releasing lots wastes into the small and large water bodies which ultimately degrades the quality of water. pollution is the rise or fall in the temperature of a natural body of water caused by human influence. oxygen from the water that kills other forms of life, leading. best known example of heavy metal pollution in the oceans took. know that pollution is a human problem because it is a. protection agency (epa) has invested about billion in improving water treatment plants that, as of 2015, serve around 88 percent of the us population (compared to just 69 percent in 1972). pollution essay 5 (300 words)water is the most important need of the life on the earth. nutrient runoff in storm water from "sheet flow" over an agricultural field or a forest are also cited as examples of nps pollution. according to pollution impacts on marine biotic communities by michael j.^ a b c national management measures to control nonpoint source pollution from agriculture (report). according to the national environmental engineering research institute (neeri), nagpur, it has been noted that around 70 per cent of the river water has been polluted to a great extent. toxic industrial and agricultural runoff should be properly treated before mixing with water sources. when plants absorb dirty water through their roots, they stop growing and die. this book is aimed at advanced undergraduates and water pollution professionals. waste water should be purified before it goes to the river. water pollution is caused by two means, one is natural water pollution (due to the leaching of rocks, decay of organic matters, decay of dead matters, silting, soil erosion, etc) and another one is man-made water pollution (due to the deforestation, set up of industries near large water bodies, high level emission of industrial wastes, domestic sewage, synthetic chemicals, radio-active wastes, fertilizers, insecticides, pesticides etc). pathogens can produce waterborne diseases in either human or animal hosts. people who bathe or surf in the water can fall ill if. on water pollutionwater pollution is the main issue affecting human lives in many ways. sources, effects, and control measures of water pollution are discussed below. fish, insects, and other invertebrates that the water will support. minimize pesticide impacts, farmers may use integrated pest management (ipm) techniques (which can include biological pest control) to maintain control over pests, reduce reliance on chemical pesticides, and protect water quality. valdez oil spill: fate and effects in alaskan waters, astm international, 1995, which collected 25 papers from an astm symposium in april 1993. discharged into coastal waters can wash up on beaches and cause. according to this plan around 120 factories were identified in 27 cities spreading pollution to a great extent from haridwar to hooghly. polluted water the different water borne virus, bacteria, and protozoa are present. all the contaminants reduce the level of dissolved oxygen in the water and affecting the lives of animals and human beings to a great extent.Travelling in our life essay
Essay on water pollution and its preventionthat water-related diseases could kill as many as 135 million people by 2020. waters can naturally clean up a certain amount of pollution by. It occurs as a result of introduction of pollutants in water. diffused sources of the water pollution are agricultural fields, live-stock feed lots, parking lot and streets into surface water, storm runoff from urban streets, etc which pours their discharged pollutants over the larger areas water bodies. water should be properly treated to make it free from any germs. we drink the polluted water, harmful chemicals and other pollutants goes inside our body and deteriorates all the body organs functioning and puts our lives in danger. chemicals undergo reactive decay or chemical change, especially over long periods of time in groundwater reservoirs.: they argue that if we want to have factories, cities, ships,Cars, oil, and coastal resorts, some degree of pollution is almost. whole water is getting polluted to a great level because mining, agriculture, fisheries, stockbreeding, various industries, urban human activities, urbanization, increasing number of manufacturing industries, domestic sewage, etc. is known to be a universal solvent and this means that various substances can get added to water and remain completely or partially dissolved or at times even undissolved.: from human excreta to liquids of house hold works, drain water containing feces, urine and other pollutants. pollution can also be caused by the release of very cold water from the base of reservoirs into warmer rivers. metals from motor vehicles (via urban storm water runoff) and acid mine drainage. for biological testing involves collection of plants and/or animals from the surface water body. a third of the people in rural china don't have access to safe drinking water. on the type and degree of treatment and control of wastes, and the disposal and use of adequately treated wastewater, must be based on a consideration all the technical factors of each drainage basin, in order to prevent any further contamination or harm to the environment. dissolved oxygen is the oxygen present in water required by the aquatic system to continue the lives of plants and animals. are many sources of the water pollution (point source and nonpoint or diffused source) depending on the specificity of waste materials discharged from various sources. usa, which were carried there from europe by ballast water (waste. pollution essay 6 (400 words)water pollution is the big environmental and social issue all across the world. of wastes in the rivers causes water pollution by decreasing the self recycling capacity of the water so it should be banned by the government in all countries especially india in order to keep the river water clean and fresh.. around half of all ocean pollution is caused by sewage and waste. thermal pollution, unlike chemical pollution, results in a change in the physical properties of water., hindrance to marine activities, including fishing,Impairment of quality for use of sea water and reduction of amenities. it can result in the shortage of water that can be used for human consumption as well as for agricultural purposes (agarwal 302). non-porous aquifers such as clays partially purify water of bacteria by simple filtration (adsorption and absorption), dilution, and, in some cases, chemical reactions and biological activity; however, in some cases, the pollutants merely transform to soil contaminants. pollution may be analyzed through several broad categories of methods: physical, chemical and biological.
Essay on water pollution - Ryder Exchangespecific contaminants leading to pollution in water include a wide spectrum of chemicals, pathogens, and physical changes such as elevated temperature and discoloration. as of 2007, half a billion chinese had no access to safe drinking water. for example, in the most recent national report on water quality in the united states, 44 percent of assessed stream miles, 64 percent of assessed lake acres, and 30 percent of assessed bays and estuarine square miles were classified as polluted. such changes in quality can render water unsuitable for consumption and also for any other domestic or agricultural purposes. pollution is much more difficult to abate than surface pollution because groundwater can move great distances through unseen aquifers. the condition of water pollution is much worse in the india than other countries having high level of industrialization. toxic waters: a collection of interesting recent water pollution news stories from the new york times. mean that factories that use rivers must have their water inlet. other toxic wastes through leakage of landfills, old mines, dumps, sewage, industrial wastes, and farms get mixed to the water. waste water every day, some of it still pumped untreated into the sea.: invasive species: above: water hyacinth crowding out a waterway around an old fence post. water pollutants include:Acidity caused by industrial discharges (especially sulfur dioxide from power plants). are too great, we can regard the water as polluted. elevated water temperatures decrease oxygen levels, which can kill fish and alter food chain composition, reduce species biodiversity, and foster invasion by new thermophilic species. any living thing may survive without food for days however it is impossible to imagine life without water and oxygen. it occurs as a result of introduction of pollutants in water. some industries have been successful at redesigning their manufacturing processes to reduce or eliminate pollutants, through a process called pollution prevention. (nitrogen and phosphorus) are typically applied to farmland as commercial fertilizer, animal manure, or spraying of municipal or industrial wastewater (effluent) or sludge. (loose soil) washed off fields is the largest source of agricultural pollution in the united states.) the concentration is often the key in determining what is a natural component of water and what is a contaminant. ireland: water pollution: a longer, 7-minute introduction describing how ireland's environmental protection agency (epa) is trying to tackle water pollution. firms often now take precautions to prevent this kind of pollution from happening. the mixing of such pollutants directly and continuously into the water bodies decreases the self purifying capacity of the water by declining the ozone (which kills harmful microorganisms) available in the water. depending on the type of assessment, the organisms may be identified for biosurveys (population counts) and returned to the water body, or they may be dissected for bioassays to determine toxicity. highway runoff runs away into drains; others can pollute groundwater or accumulate in the land next to a road, making it increasingly toxic as the years go by. physical factors such as radiations also have an impact on water quality and aquatic life (goel 2). water pollution is the contamination of drinking water by the poisonous pollutants generated by the human activities.
Introduction to water pollution essay
SEAL Tribute :: » Essay on air pollutionaccording to 2013 figures from the world health organization, some 780 million people (11 percent of the world's population) don't have access to safe drinking water, while 2., the ink would quickly disappear into the river's much larger volume of clean water. are the most common forms of pollution—but by no means the. it is tough to estimate the possibility of life on the earth in the absence of fresh drinking water. of water for physical or chemical testing can be done by several methods, depending on the accuracy needed and the characteristics of the contaminant. groundwater that moves through open fractures and caverns is not filtered and can be transported as easily as surface water. the amount of oxygen dissolved in the water, thus also reducing. interrelated, surface water and groundwater have often been studied and managed as separate resources. substances present in water may lead to radioactive pollution causing cancer. we think of earth's water resources, we think of huge. the effect of water pollution varies from place to place upon the type and amount of water contamination. pollution happens not from one single source but from many. the head of china's national development agency said in 2007 that one quarter the length of china's seven main rivers were so poisoned the water harmed the skin. pollution almost always means that some damage has been done to an ocean, river, lake, or other water source. of salvinia and azolla in the pond or lake can fix toxic metal and hence metal pollution can be reduced. billion (40 percent of the world's population) don't have proper sanitation (hygienic toilet facilities); although there have been great improvements in securing access to clean water,Relatively little progress has been made on improving global sanitation in the last decade. more on pollution:pollution essay : air pollution | water pollution | soil pollution | noise pollution. pollution essay 2 (150 words)water pollution is the most dangerous and worst form of pollution putting lives in danger. plastic debris can absorb toxic chemicals from ocean pollution, potentially poisoning any creature that eats it. however, because this runoff is typically channeled into storm drain systems and discharged through pipes to local surface waters, it becomes a point source. of transboundary pollution, traces of pcbs have even been found. an estimated 580 people in india die of water pollution related illness every day. alteration of water's physical chemistry includes acidity (change in ph), electrical conductivity, temperature, and eutrophication. to teach people in south asia about human activities leading to the pollution of water sources. a spill or ongoing release of chemical or radionuclide contaminants into soil (located away from a surface water body) may not create point or non-point source pollution but can contaminate the aquifer below, creating a toxic plume.: pollution means adding substances to the environment that don't belong there—like the. other microorganisms sometimes found in surface waters that have caused human health problems include:Burkholderia pseudomallei. What makes good poetry essay
here we have provided some easily written essay on water pollution for students., earth is forgiving and damage from water pollution is often reversible.: different chemical fertilizers, fungicides, pesticides used in agricultural field are washed out rain water and pollute by the different water bodies. scientists gathering this type of data often employ auto-sampler devices that pump increments of water at either time or discharge intervals. there is a limited availability of drinking water on the earth however that too is getting polluted because of human activities. in other words, pollution is a necessary evil that people. natural phenomena such as volcanoes, algae blooms, storms, and earthquakes also cause major changes in water quality and the ecological status of water. a consequence of water pollution also includes the destruction of aquatic life which can also impact the economy of various countries because aquatic animals such as fish form an important part of the food, and import and export industries.: oil-tanker spills are the most spectacular forms of pollution and the ones that catch public attention,But only a fraction of all water pollution happens this way. international convention for the prevention of pollution from ships,And the 1998 ospar convention for the protection of the marine. kind of toxic pollution comes from heavy metals, such as.↑ international maritime organization: marine environmental awareness, 2011 edition, imo press, 2011 reveals that routine shipping adds three times as much oil to the marine environment as accidental pollution (but that doesn't factor in significant discharges coming from the land). essayenvironmental issues essayfarmer suicides in india essaymusic essaygandhi jayanti essaycow essaymy best friend essayrabindranath tagore essaysocial issues and social awareness essaystatus of women in india essayfootball essayfeaturing 10/162 of essayfind all. consequently, groundwater pollution, also referred to as groundwater contamination, is not as easily classified as surface water pollution. as hepatitis, typhoid, and cholera from river and sea water. is eventually going to reduce the quantity of water that can be used from water bodies. pollution is mainly caused as a result of improper discharge of household and industrial chemicals wastes into the water bodies. still, we contribute in polluting the water bodies in several ways. hydrocarbons, including fuels (gasoline, diesel fuel, jet fuels, and fuel oil) and lubricants (motor oil), and fuel combustion byproducts, from storm water runoff. about 90 percent of the water in the cities of china is polluted. pollution is usually less obvious and much harder to detect than. nutrients may also enter runoff from crop residues, irrigation water, wildlife, and atmospheric deposition. of garbage including 268 pieces of plastic, 71 plastic bottles,Most people's idea of water pollution involves things like sewage,Toxic metals, or oil slicks, but pollution can be biological as well as. slogans : air pollution slogans | water pollution slogans | soil pollution slogans | noise pollution sloganswater pollution : sources and causes of water pollution | effects of water pollution | how to control water pollutionshare:Mother essaydecember 24, 2016.. paper, plastic, or food waste) discarded by people on the ground, along with accidental or intentional dumping of rubbish, that are washed by rainfall into storm drains and eventually discharged into surface waters. point sources includes pipelines, ditches, sewers, etc from industries, sewage treatment plants, landfills, hazardous waste sites, leakage from oil storage tanks which discharges wastes directly into the water bodies. depending on the degree of eutrophication, subsequent negative environmental effects such as anoxia (oxygen depletion) and severe reductions in water quality may occur, affecting fish and other animal populations. What to include in science fair research paper
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