Water pollution Air pollution

May 29th, 2015
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Angelo State University
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“The presence of a substance in the environment that because of its chemical composition or quantity prevents the functioning of natural processes and produces undesirable environmental and health effects.”

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Pollution:The presence of a substance in the environment that because of its chemical composition or quantity prevents the functioning of natural processes and produces undesirable environmental and health effects.The quantity and persistence of pollutants has been directly related to population growth and development (modernization)High levels of air and water pollution prompted action by developed nationsTrend: from large quantities of lower toxicity to smaller quantities of high toxicity Pollution has been shifting from the developed (richer) nations to the developing (poorer) nations. Pollution used to be primarily a local issue; it is now a global issue.Water pollution Nutrients Chemicals Sewage Sediments Air pollution Greenhouse gases Ozone depleting substances Chemicals ParticulatesSolid Wastes Thermal pollution Noise pollution Light pollution Space pollutionNature of polluting substance Toxicity Biodegradability / PersistenceQuantity / Concentration of pollutant Rate of release into environment Natural cleansing or dilution rate The solution to pollution is dilution Location / Environmental conditions Some environments are more fragile Proximity to human populationsGeneral Pollution Control Strategy Identify the pollutant(s) causing the problemIdentify the source(s) of the pollutant(s) Clean up areas already impacted by pollution Develop and implement pollution control strategies to prevent pollution from (re)entering the environment Develop and

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