SCI204 Water Pollution and Management Devry SCI204 week 5 quiz Question 1. 1. (TCO 8) Which of the following contains the least amount of water?(Points : 3) Oceans Polar ice caps and glaciers Accessible freshwater Total freshwater Saltwater seas Question 2. 2. (TCO 8) Which of the following leads to increased inputs of phosphorus into waterways?(Points : 3) The use of crop rotation in agriculture Forest fires The combustion of fossil fuels The use of chemical fertilizers in agriculture Condensation and precipitation Question 3. 3. (TCO 8) Pollution includes(Points : 3) dumping detergents into streams, causing fish kills spraying with DDT, lowering the eagle population releasing gases from coal combustion, causing acid rain allowing fertilizer runoff from cropland All of the above Question 4. 4. (TCO 8) A major water related health problem in developing countries is that (Points : 3) groundwater is usually contaminated with human waste groundwater is usually contaminated with industrial wastes. groundwater is not available surface waters used for water supplies are often contaminated with human wastes surface waters are contaminated with industrial wastes Question 5. 5. (TCO 8) The best way to reduce the pollution of agricultural fertilizer runoff from farm fields is(Points : 3) to treat the water before it reaches streams or rivers to reduce the amount fertilizer leaving the farm fields to add chemicals into the rivers and streams that neutralize the fertilizers to raise crops in the rivers and streams that use the fertilizers None of the above Question 6. 6. (TCO 8) According to the Environmental Protection Agency, the greatest current water pollution challenge in the United States is illustrated by(Points : 3) sewage - treatment effluent agricultural runoff fluids released from oil wells. discharge of substances from factories household waste Question 7. 7. (TCO 8) The dead zone in the Gulf of Mexico is primarily the result of(Points : 3) nonpoint sources of pollutants