introduction Noise pollution is the disturbing or excessive noise that may harm the activity or balance of human or animal life. The source of most outdoor noise worldwide is mainly caused bymachines and transportation systems‚ motor vehicles‚ aircraft‚ and trains.[1][2] Outdoor noise is summarized by the word environmental noise. Poor urban planning may give rise to noise pollution‚ since side-by-side industrial and residential buildings can result in noise pollution in the residential areas.
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Essay 1 Air Pollution: Causes and Effects It keeps us alive but at the same time‚ it can also be harmful. We breathe air everyday. Air provides us with oxygen that is essential for living. Nitrogen‚ water vapor‚ and inert gases comprise air along with oxygen. Emission of substances that contaminate air results to pollution. Causes Air pollution is both natural and human-based. Natural air pollution is caused by phenomenon such as volcanic eruption‚ wind erosion‚ decomposition and radioactive
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Sound is essential to our daily lives‚ but noise is not What is Noise Pollution? The traditional definition of noise is “unwanted or disturbing sound”. Sound becomes unwanted when it either interferes with normal activities such as sleeping‚ conversation‚ or disrupts or diminishes one’s quality of life. It is a source of irritation and stress for many people and can even damage our hearing if it is loud enough. Many of us are exposed to stressful levels of noise at home and at work. Noise is
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Air pollution Air pollution is a problem everywhere in the world. Local air pollution usually affects big cities. Air pollution becomes a worldwide problem when local pollution moves away from where it came from. For example‚ winds carry air pollution made in the middle of the western part of the United States to Canada‚ like acid precipitation. Acid precipitation Acid precipitation is precipitation‚ like rain‚ sleet‚ or snow‚ that contains acids from air pollution. When fossil fuels are burned
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Protection Agency Office of Water 4304 EPA-822-B-01-003 October 2001 Nutrient Criteria Technical Guidance Manual Estuarine and Coastal Marine Waters U.S. Environmental Protection Agency Nutrient Criteria Technical Guidance Manual Estuarine and Coastal Marine Waters October 2001 Disclaimer This manual provides technical guidance to States‚ Indian Tribes‚ and other authorized jurisdictions to establish water quality criteria and standards under the Clean Water Act (CWA)‚ to protect aquatic
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WATER OUR LIFELINE Water is a transparent fluid which forms the world’s streams‚ lakes‚ oceans and rain‚ and is the major constituent of the fluids of living things. As a chemical compound‚ a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds. Water covers 71% of the Earth’s surface.[1] It is vital for all known forms of life. On Earth‚ 96.5% of the planet’s water is found in seas and oceans‚ 1.7% in groundwater‚ 1.7% in glaciers and the ice caps of Antarctica
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exemplars of the phenomenon of globalization. This is due to the geographical scale of the industry‚ increased spatial linkages between places and people from different locations. The purpose of this paper was to evaluate the extent to which tourism globalization had impacted on African countries. The paper submits that some African countries have indeed increased their revenues and foreign currency earnings‚ created employment‚ brought new technology‚ and improved their tourism facilities and services
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Air Pollution To understand pollution of air‚ some knowledge of the atmosphere is required. Atmosphere is a layer consisting of a few gases surrounding the planet earth and is vital for the survival of life on earth. The atmosphere protects earth from abrupt temperature fluctuations from the powerful ultra violet radiation coming from the sun. The atmosphere is made up of nitrogen 78%‚oxygen 21%‚argon 0.9%‚carbon dioxideo0.03% and small amount of trace gases ‚helium ‚neon‚ krypton‚ xenon‚ hydrogen
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Air Pollution Air is the most important element of life. For some ’air pollution‚’ let us give thanks. Dust and other particles in the atmosphere serve as nuclei about which raindrops form. But man has overloaded the sky. For centuries he has pumped particulate matter and gases into the atmosphere. As far back as 1661‚ a tract on air pollution was published in England: Fumifugium: or the Inconvenience of the Aer and Smoake of London Dissipated. Today much of the world suffers from the eye-smarting
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REPORT OF INDUSTRIAL VISIT Letter of Transmittal 31-Oct-2013 To The Head of the Discipline Chemistry Discipline Khulna university‚ KHULNA Dear Sir‚ Sub: Report of the One – Day industrial visit On receiving the letter of permission from Bashunddhara Cement Industries Ltd. Mongla‚ students of Chemistry Discipline with five faculty members went on an industrial visit Bashunddhara Cement Industries Ltd. Mongla on 05-010-13. We all assembled at the university at 8 a.m. and left the university
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