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6 Cards in this Set
- Front
- Back
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Agricultural Effects of Nutrient Cycling
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Use of fertilizers increases amount of nitrogen oxides in atm--> atm warming, depletion of ozone, acid rain
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Cultural Eutrophication
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Overload many freshwater streams and lakes with N---> can eliminate fish species b/c difficult for them to live in new conditions
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Combustion of Fossil Fuels
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Release sulfur oxides and N that react with Water in atm--> produces Sulferic and Nitric acids --> acid raid --> change in pH can kll plants + aquatic organisms
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Biological Magnification
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Humans produce toxic chemicals that can accumulate in tissues of animals --> become more concentrated in successive trophic levels of food web
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The Greenhouse Effect
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Increased CO2 in atm (burning of fossil fuels) --> traps heat that ordinarily escapes the atm--> global warming --> melting of polar ice caps --> flooding
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Depletion of Ozone
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O3 (ozone) protects us from harmful UV radiation - thinning of ozone results from accumulation of chlorofluorocarbons (CFC's) sed in refigretation and aerosol cans --> increased cases of skin cancer
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