Types, Sources, and Solutions for Lake Pollution

In an extensive sampling effort, the Environmental Protection Agency, with the help of state and tribal agencies, coordinated water quality assessments for the country’s lakes. They evaluated 43% of the lake surface area or about 17.3 million acres of water. The study concluded that: Fifty-five percent of the study’s water acreage was judged to be of good quality. The other 45% had waters impaired for at least one type of use (for example as drinking water supply, for recreational fishing, swimming, or aquatic life support). When considering man-made lakes alone, the proportion that was impaired jumped to 59%.Water quality is sufficiently high to allow swimming in 77% of the waters assessed.Aquatic life was not supported adequately by 29% of lake waters.For 35% of the lake waters surveyed, fish consumption was not recommended. For the impaired lakes, the top types of pollution were: Nutrients (problematic in 50% of impaired waters). Nutrient pollution occurs when excess nitrogen and phosphorus make their way into a lake. These elements are then picked up by algae, allowing them to grow rapidly to the detriment of the aquatic ecosystem. Overabundant cyanobacterial algae blooms can lead to toxin build-up, oxygen level drops, fish kills, and poor conditions for recreation. Nutrient pollution and the subsequent algae blooms are to blame for Toledo’s drinking water shortage in the summer of 2014. Nitrogen and phosphorus pollution comes from inefficient sewage treatment systems and from some agricultural practices.Metals (42% of impaired waters). The two main culprits here are mercury and lead. Mercury accumulates in lakes mostly from atmospheric deposition of pollution coming from coal-fired power plants. Lead pollution is often the result of accumulated fishing tackle like sinkers and jig heads, and from lead shot in shotgun shells.Sediment (21% of impaired w aters). Fine-grained particles like silt and clay may occur naturally in the environment but when they enter lakes in large quantity, they become a serious pollution problem. Sediments come from the many ways soil can be eroded on land and carried into streams then lakes: erosion can originate from road construction, deforestation, or agricultural activities.Total Dissolved Solids (TDS; 19% of impaired waters). TDS measurements can be interpreted as how salty the water is, generally due to high concentrations of dissolved calcium, phosphates, sodium, chloride, or potassium. These elements most often enter the roadways as road salt, or in synthetic fertilizers. Where do these pollutants come from? When assessing the source of pollution for the impaired lakes, the following findings were reported: Agriculture (affecting 41% of impaired waters). Many agricultural practices contribute to lake water pollution, including soil erosion, manure and synthetic fertilizer management, and the use of pesticides,Hydrologic modifications (18% of impaired waters). These include the presence of dams and other flow regulation structures and dredging activities. Dams have extensive effects on a lake’s physical and chemical characteristics, and on aquatic ecosystems.Urban runoff and storm sewers (18% of impaired waters). Streets, parking lots, and rooftops are all impervious surfaces that do not allow water to percolate through. As a result, water runoff speeds up to storm drains and picks up sediments, heavy metals, oils, and other pollutants, and carries it into lakes. What Can You Do? Use soil erosion best practices whenever you disturb soil near a lake.Project lake shorelines on your property by preserving the natural vegetation. Replant shrubs and trees if needed. Avoid fertilizing your lawn close to a lake’s edge.Encourage the use of sustainable farming methods like cover crops and no-till farming. Talk to farmers at your local farmers market to find out more about their practices.Keep septic systems in good working order, and have regular inspections conducted.Encourage local authorities to use alternatives to road salt in winter.Consider your nutrient inputs from soaps and detergents, and reduce their use whenever possible.In your yard, slow down water runoff and allow it to be filtered by plants and soil. To accomplish this, establish rain gardens, and keep drainage ditches well vegetated. Use rain barrels to harvest roof runoff.Consider using pervious pavement in your driveway. These surfaces are designed to let water percolate into the soil below, p reventing runoff.Choose alternatives to lead when selecting a fishing tackle.   Sources EPA. 2000. National Lake Assessment Report.EPA. 2009. National Lake Assessment: A Collaborative Survey of the Nation’s Lakes.

Understanding Cultures And Intercultural Communication

â€Å"Understanding cultures and intercultural communication in terms of countries and nationalities is no longer relevant or effective.† Evaluate this statement, referring to relevant theories and using examples where appropriate. Student ID: 6749473 Academic subject: MSC Accounting and Financial Management Word count: 1511 Topicï ¼Å¡Ã¢â‚¬Å"Understanding cultures and intercultural communication in terms of countries and nationalities is no longer relevant or effective.† Evaluate this statement, referring to relevant theories and using examples where appropriate. In the past five decades, there has been a considerable increase in exchanges between different countries, such as business, financial, individual, economy, religion, education and gender. Intercultural communication is essential in the contemporary world due to globalisation. 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The History Of The Systemic Approach Education Essay Free Essays

In fact, survive with computing machines in the schoolroom, it is a spot like populating with an elephant, it is nerve-racking, it is cumbrous, it is upseting. What do you make with an elephant. We try to chasten the otherwise tame. We will write a custom essay sample on The History Of The Systemic Approach Education Essay or any similar topic only for you Order Now This is engineering, efforts to incorporate them into learning pattern. But how? Changing wonts and behaviour. But alteration is complicated, it requires be aftering, must be checked and it is non easy to pull off an elephant, nor the usage of computing machine equipment. A A A About 25 old ages ago that we are working to incorporate â€Å" new † engineerings in different states. At different rates, depending on altering the joys, successes and failures in sequence – some losing forbearance, argue that it is an ageless – and yet†¦ Each cringle of the coiling brings us innovative farther in front. The school exchange and usage of progressively engineerings and digital resources to consolidate these alterations. Change, innovate, integrate, absorb engineering â€Å" new † â€Å" The engineering in the school will be † new â€Å" if teaching method that employs is new. ‘ A A A One manner to alter their instruction patterns is to incorporate digital engineerings in their instruction patterns. But it must be remembered that this alteration does non introduce. For there to be invention, ICT integrating should advance the development of one or more of the undermentioned rules: A A A A increased contact teachers-students or distance ; A A A A promote high outlooks vis-a-vis pupils A A A A support larning reactive, proactive and synergistic ; A A A A facilitate effectual and immediate feedback ; A A A A better and increase the clip of survey and reading ; A A A A promote diverse endowment ; A A A A enhance cooperation among pupils. A A A If the usage of ICT is non contributing to the development of one or the other of these rules, so there is alteration, but there is no pedagogical invention. But how and with what tools can we heighten the educational development of these rules? The â€Å" public presentations † of new engineerings in schools are non connected to the power or edification of machines†¦ can non assist believing that it is easier to fault the machines need educational†¦ Finally, everything is at that place, new engineerings in schools will be â€Å" new † if the teaching method that employs is â€Å" new † or instead renewed. ‘ A A A Is that correct? Are at that place baronial utilizations of engineering in instruction live togethering with enfeebling or unworthy intents? This is improbable. It is instead a inquiry of development, integration measure. We must larn to utilize simple engineerings before embarking into complicated utilizations. A A A To introduce through engineering, we must foremost be concerned pupils and so take attention of tools. This is the foundation of a humanistic, interdisciplinary and â€Å" anthropocentric † and a systemic attack to invention in instruction and basic reengineering the school utilizing engineering. A A A Too frequently, the execution of information engineering is under the mark of improvisation. We believed, and still believe one of the â€Å" innovators † , the diffusion of an invention in instruction is by osmosis and contagious disease nearby. This vision of â€Å" Utopian † procedure returns as follows: a instructor sets up an advanced undertaking utilizing ICT in the schoolroom. Spontaneously, co-workers, intrigued by both invention and covetous of such a success, eager to transform their teaching method, innovate and take part in this educational success. Just direct them the know-how. The shriveling expands and shortly the whole school is â€Å" tainted † by the new engineerings, each wishing to have an elephant in its category! A A A Unfortunately, invention is non spread in this manner in the field of instruction. It agree, this scheme has non vicarious delivered the expected consequences. Few thousand early adoptive parents have non wholly spread in their schools. Colleagues in the â€Å" innovator † did non spontaneously coveted innovate or chambarder their teaching method, or rearrange their classs. They did non instantly agreed that the success of an invention undertaking was due to the engineering, even if it was really present in the undertaking. In this vision of â€Å" spontaneousness † of the diffusion of invention, we must oppose systematic and systemic attack. A A A The systemic attack is divided into four phases. First measure, the system is in equilibrium functional school. Each histrion ( manager, instructors, pupils, professionals, director, support staff ) takes his function and the system is runing usually. It accomplishes its mission decently and wholly? If so, there is no demand to interrupt, the chambarder. Otherwise, the school does non let pupils to develop adequately its function in society. The school system is so critiqued and challenged. It is clip to alter it. Second measure, given the insufficiencies of the school riotous inventions are introduced doing daze moving ridges and instability. Third phase, the school system responds to this instability in two ways: a ) rejection of freshness to maintain the same old balance unstable and unsatisfactory B ) if the first maneuver did non work so the school system efforts to incorporate new, but minimising its effectivity and impact†¦ It is riotous and instructors seeking to incorporate engineering but altering nil in their instruction. Teachers try once more with these new tools the same as before but more frequently and more rapidly. Fourth measure, if the tactical integrating harmonic rejection or non fonctionnees so the system tries to absorb new engineering and animate a new systemic functional balance. Then there is reclamation of learning patterns. These four stairss are carried out consecutive and the procedure can be accelerated or stopped at any clip. This is why it is so of import when presenting technological inventions in instruction planning in continuance, to persist and to maximise the disruptive and destabilizing. Until a new equilibrium is non reached systemic one can state that an establishment is in the procedure of integrating but non assimilation. If the advanced release system force per unit area on the freshness consequence may regress and everything can be once more. A A A Furthermore, it is of import non to pout and success when instructors say the engineering used in their pattern non yet to the full renewed you must cognize the clip encouraged to go on doing the coveted alterations. Thus the â€Å" innovators † , backed up by the governments, can distribute the freshness and â€Å" contaminated † the whole community. 3. The â€Å" formula † for a successful execution â€Å" Let us all engineerings, but Lashkar-e-Taiba ‘s slave ordinal number ‘ A A A Already in 1987, the â€Å" innovators † of the integrating of engineering in learning had discovered the â€Å" formula † for a successful execution. [ 5 ] Here it is: 3.1. Ingredients A A A A Strong political will which beef up local directors in their attempts and back up â€Å" firm † instructors. A A A A Significant fiscal resources and provided yearly for several old ages, conditions for long-run planning. A A A A Many computing machines, efficient, dependable, accessible, networked and connected to the Internet for teleco and learning communities. A A A A Powerful applications, stable, dedicated, easy to utilize, user friendly and supply entree to content and quality digital resources seamlessly incorporate subjects. A A A A Information and support in good measure and at a changeless flow and steady. A A A A A systemic integrating consequence of a happy complicity between the spouses in instruction ( instructors, principals, counsellors, engineering directors ) . A A A A Time for instructors, clip for contemplation, for preparation, for planning of larning state of affairss and rating ( SAE ) authentic, contextualized and described in conformity with the preparation plan. 3.2 Preparation A A A Each of these ingredients should be available in good measure and assorted in proportions that meet regional liberty and the sensitiveness of local histrions ( schools ) . For illustration, the Commission scolaire de la Seigneurie-des-Mille-Iles lists five phases of ICT integrating in instruction: entry, acceptance, version, appropriation and innovation. The innovation is the phase where the instructor imagine new utilizations for enriching the preparation plan [ 10 ] . Depending on the phase identified resource demands, preparation and support may change. This is the first component to see when planning integrated and contextualised by a systemic attack. A A A Regarding pupils, without desiring to give the urban fable sing the genetically programmed acquisition who would be born â€Å" between a mouse and a keyboard † , we must acknowledge that many are non expected the chance to step into the schoolroom, or connected Television chance to collaborate. A A A If readying and ingredients are non sufficient quality and measure, mayonnaise may non acquire as stressed this illustrated â€Å" Barriers to ICT for instructor. tekki â€Å" . 3.3 Tips and Tricks A A A This â€Å" recipe † known in 1987 and repeated in 1997 [ 13 ] , should be reissued in 2007 for everyone to retrieve that the universe of engineering has non appeared today and will non vanish with him. Sing its airing in instruction, there is a universe of distinction. A A A However, nowhere resources will non be sufficient to fulfill the impatient. Two digressive forces hinder this forced March towards ICT everyplace for everything and for all, at least in industrialised society. First, the human and fiscal resources are scarce and must be shared among multiple precedences. More money to engage instructors or purchase equipment? A A A There is so the opposition to alter. Throughout the West, school systems are shaken – interviewed – and this uncertainness before school decision makers and instructors do non desire to be confused disrupted rushed. The instructor of the present clip is a tired adult male band – and this schematisation of his public presentation ( Figure 2 below ) begins its resiliency and helps to deter. 4. The effectivity of digital engineerings for learning â€Å" It takes a small town to raise a kid†¦ with a computer. ‘ A A A For the school adapts to alterations in engineering and integrates computing machine and Internet, you need a vision-based acquisition ecology of the school is based on the construct of computerized acquisition environment, what, besides known as digital work environment ( DWE ) , practical campus or practical office work [ 16 ] . Specifying the school as a acquisition environment, it is refocusing on acquisition and, therefore, more efficient usage of its resources. This is when they are placed in rich acquisition environments, including effectual cognitive tools, these are existent or practical environments that kids every bit good as grownups, learn and develop intellectually and socially. A A A Christian Barrette, an analyst at the Association for Research in college ( CRA ) , has compiled a batch of research on the effectivity of new engineerings for learning and larning. [ 17 ] Barrette concludes that ICTs are effectual when they are portion of a structured educational finely diversified acquisition activities and pedagogical attacks. In other words, the course of study offers larning of cognition, thoughts, constructs, and accomplishments development ( cognition, know-how, accomplishments ) and the instructor must cognize how to utilize ICT sagely to accomplish all these ends. A A A Confirming the research of Professor Marcel Lebrun Louvain-La-Neuve [ 18 ] proposes to consolidate Barrette pedagogical attacks into three categories-behavioral attacks empiricist, positivist, humanist and cognitive-constructivist which it associates the technological point of position the applications and attacks reactive, proactive and synergistic. Should prefer the constructivist attack when utilizing ICT at school? Not needfully run into Barrette. We need to diversify pedagogical attacks, learning methods and digital tools. And the research worker noted that â€Å" Among these attacks, the emerging of societal constructivism in pedagogical discourse, but small in pattern. It has been said about it, it could be good served by these engineerings that facilitated communicating and exchange in the transmutation of information into cognition meaningful. â€Å" The empirical grounds, drawn from the research reviewed, indicate that it is possible that ICTs are besides centered a ttacks to knowledge transportation ( behaviourism reactive manner ) or witting control of cognitive accomplishments ( proactive manner and cognitivism reflexive ) . A A A The reappraisal of undertakings and technological devices for larning ( larning state of affairss or learning scenarios and computing machine system ) really shows that these devices fall into three households: A A A A devices bring oning larning public presentation ( behaviourism, reagent ) ; A A A A bespeaking devices metacognition ( cognitivism, proactive – reflexive ) ; A A A A devices back uping collaborative acquisition ( constructivism, synergistic – ego ) . A A A Lesson effectual digest of assorted surveies reviewed by Barrette is hence as follows have proved effectual preparation devices ( attack, method, activity, larning state of affairs, digital tools ) : A A A A bring oning larning public presentation ( expressed ) and utilizing adaptative tools and differentiated exercisings repeated as gymnastic apparatuss, tutorials, educational games, lifes, chiefly used in the schoolroom or computing machine lab A A A A seeking metacognition and utilizing tools such as tutorials, dynamic geometry, demos, simulators, scheduling, robotics, drawings, portfolios in single activities that extend beyond the schoolroom or research lab ; A A A A back uping collaborative acquisition with tools such as practical preparation environments, wikis, web logs, electronic mails, forums, preparation platforms, which support active communities of exchange and cooperation particularly outside of the schoolroom or computing machine lab. A A A Figure 3 summarizes these three pedagogical attacks and this for each definition of acquisition, the scholar, the instructor ‘s function, the position of cognition, learning methods and illustrations of digital tools preferred. You will besides happen the didactic rules that promote educational invention and educational success. Empiricism Behaviorism Rationalism Cognitivism Humanitarianism Constructivism Definition of larning alteration in discernible behaviours. Change in ways of thought and work outing jobs. Cognitive struggles. Change in ways of thought, in co-creation activities. Motivate. Definition of larning Learning reactive hearing, watching, reacts and attempts once more. Active acquisition, information processor, treat the information, automatic procedure, high outlook Interactive Learning, cognition builder which initiates a undertaking and self-regulating, reflective, high outlook Role of the instructor sender of information and cognition. It presents, describes, schematically, programs and cheques. Manager of acquisition, usher, leads, directs, advocate says, is sing jobs, regulates redress. Guide, Zanzibar copal, aid, cause, inquiries, organizes, provides, suggests redresss and allowed to move, suggests ego Status of cognition / skills nonsubjective external world that the pupil must get, assimilate and reproduce. External world that the pupil must incorporate its mental forms and reuse. Reflexivity. Objective external world but perceived and reconstructed competency = know how to move by mobilising Teaching methods Teaching group, explicit, E3, repeated pattern, immediate feedback, survey clip, frequent contacts. Individualized direction, differentiated strategic attack deductive – inductive survey clip, frequent contacts. Vicarious larning strategic, differentiated by undertakings inductive-deductive, less frequent contact, promotes cooperation. Digital tools preferred Gymnastic apparatuss, tutorials, games, ICT competency, life, web portfolio, trial hidden words quiz Net and others. Simulations, simulation, robotic, jobs, You ‘re the hero, programming, Create a Web page, DAO, experience, portfolio, geometry, practical research lab, SAE, Scoop, webquests. . How to cite The History Of The Systemic Approach Education Essay, Essay examples