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6 Cards in this Set

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Agricultural Effects of Nutrient Cycling
Use of fertilizers increases amount of nitrogen oxides in atm--> atm warming, depletion of ozone, acid rain
Cultural Eutrophication
Overload many freshwater streams and lakes with N---> can eliminate fish species b/c difficult for them to live in new conditions
Combustion of Fossil Fuels
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
Biological Magnification
Humans produce toxic chemicals that can accumulate in tissues of animals --> become more concentrated in successive trophic levels of food web
The Greenhouse Effect
Increased CO2 in atm (burning of fossil fuels) --> traps heat that ordinarily escapes the atm--> global warming --> melting of polar ice caps --> flooding
Depletion of Ozone
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