Vehicles are the major source of air pollution in the urban areas. Vehicular exhaust‚ a by-product of fuel combustion contains potentially lethal chemical compounds such as carbon monoxide‚ oxides of nitrogen and sulphur and unburnt hydro carbons. Vehicular pollution traces its source to fossil fuels that are burnt in mobile sources (all categories of motorized vehicles). During the past few years‚ various steps have been taken to reduce vehicular emissions and its effect is evident
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confusions Division Algae * Includes chlorophyll-bearing‚ simple‚ thalloid‚ autotrophic‚ and largely aquatic (freshwater and marine) organisms * Some occur in association with fungi (lichens) and animals (on sloth bear). * Size ranges from microscopic unicellular forms such as Chlamydomonas to colonial forms such as Volvoxand to filamentous forms such as Ulothrix and Spirogyra. * Massive plant-like bodies are seen in some marine forms (such as kelps). Economic Importance *
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Save the ailing Earth from vehicular pollution Environmental pollution is one of the most serious problems facing humanity and other life forms on our planet today. Since the rise of the advancement of awkward prepositional phrasing technology‚ pollution had already started its harm as well; awkward phrasing from the dropping of the first atomic bomb‚ which results to land‚ water‚ and air pollution‚ to the industrialized world that pollutes the entire earth. People had been attempting to stop
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Vehicles on the roads contribute to air pollution in major way. Most of the vehicle plying on road are fuelled by petrol and diesel emitting pollutants like Ozone gas‚ Nitrogen Oxides (NO)‚ particulate matter‚ soot smog‚ carbon monoxide (CO)‚ sulphur dioxide (SO2) etc These emissions not only pollute the environment‚ but also pose variety of health risks for people. Pollution is the main reason behind skin cancers‚ asthma‚ bronchitis‚ and other respiratory disorders. Even newborn children can
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movement’s role in reconstruction of this ailed planet is discussed in the chapter ‘THE AILING PLANET: GREEN MOVEMENT’S ROLE’ in English textbook of class x1.since it is just an article from The Indian Express published on1994 November 24. For the sustainable development of ‘world’s most dangerous animal’ man‚ he had exploited the nature a lot. It is more than a lot truly. Since nature is the raw material for all our needs‚ we will be living in an ailed planet soon if the nature is destructed like this
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volt‚ 50 Hz AC through overhead catenary. The metro has an average daily ridership of over a million commuters‚[3] and has carried over a billion commuters in seven years since its inception. The concept of a mass rapid transit for Delhi first emerged from a traffic and travel characteristics study carried out in the city in 1969.[8] Over the next several years‚ many official committees by a variety of government departments were commissioned to examine issues related to technology‚ route alignment and
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are used up. The resources will soon be finished and we will die without it. There will also be more waste produced and soon a lot of land is needed for these piles of waste. Although more population prevent the human race from getting extinct but more people means more pollution‚ more sprawls‚ less green space‚ and even more demands on the earth’s already overburdened resources. There are a great number of inventions which have improved our lives. However‚ some of the inventions such as the car‚
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In 12th century France the courretiers de change were concerned with managing and regulating the debts of agricultural communities on behalf of the banks. Because these men also traded with debts‚ they could be called the first brokers. A common misbelief is that in late 13th centuryBruges commodity traders gathered inside the house of a man called Van der Beurze‚ and in 1309 they became the "Brugse Beurse"‚ institutionalizing what had been‚ until then‚ an informal meeting‚ but actually‚ the family
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Air Pollution from Vehicles Jacqueline Alcantar University of Phoenix Kieste Mayfield October 24‚ 2010 Automobiles as well as other mobile vehicles are one of the largest contributors to polluting our air on a daily basis. While these vehicles produce green house gases such as carbon monoxide‚ they are also contaminating the air with many other air pollutants and air toxins. By finding alternative fuel sources will be one of the solutions to curb the emissions that produce the pollutions. As smaller
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hard water? 4. Define alkalinity. 5. Why is water softened before using in boiler? 6. What is meant by priming and foaming? How can they be prevented? 7. What is meant by caustic embrittlement? How is it prevented? 8. Indicate the reasons for boiler corrosion. 9. What is the role of phosphates in the internal treatment of water? 10. What is calgon conditioning? How is it functioning in water treatment? 11. Mention requisites of potable water. 12. Write briefly on disinfection of water by
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