Chapter_17 - AIR POLLUTION The crisis: London Smog. In the...

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AIR POLLUTION
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The crisis: London Smog. In the first week of December 1952, The air over London became stagnant, solar radiation could not reach the surface, the humidity rose and the temperature fell. Londoners began heating their houses with coal, ash, sulfur dioxide and soot clogged the atmosphere and at mid-day in London, cars had to use headlights! The crisis dissipated when the weather changed and 400 people succumbed to air pollution. This crisis could happen now in our cities!
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Introduction • The atmosphere is a medium for deposition of wastes. Photosynthesis by plants result in waste [oxygen] which helps other life-forms • The atmosphere has been a medium for human-kind to dispose unwanted materials, such as smoke from fires. • Industrialization and rapid urbanization have exacerbated these problems • Iceland volcano – Eyjafjallajokull “AY- yah-fyah-lah-YOH-kuul.”
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Pollution of the atmosphere • Pollution of the atmosphere by natural and artificial process can cause effects such as acid rain. • Air pollution is a well-known hazard in cities such as Los Angeles California. Other cities with problems are Houston, Charlotte, Atlanta and Baltimore. Most of US suffers from air pollution. • This results in effect on human artifacts as well as discolors and “dirties” the surroundings
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Effects on soil and water: When pollutants from air are deposited, soils and water get toxic Effects on vegetation: Damage to leaf tissue, fruit, reduction in rates of growth, increased susceptibility to disease Effect on animals: Impairment of respiratory system, damage to eyes, teeth, bones; decrease in availability of food Effect on human health: Toxic poisoning, eye irritation, respiratory irritation
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This note was uploaded on 02/10/2011 for the course GEOL 103 taught by Professor Lakshmi during the Spring '10 term at South Carolina.

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Chapter_17 - AIR POLLUTION The crisis: London Smog. In the...

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