AP Environmental Science Strengths and Improvement Opportunities Ch 20 Water Pollution B 121421 A+ solution

AP Environmental Science Strengths and Improvement Opportunities Ch 20 Water Pollution B A+ solution   Strengths and Improvement Opportunities Ch 20 Water Pollution B Course: AP Environmental Science • Instructor: SHANNON • Questions: 20 QUESTION A: conductivity B: dissolved oxygen (DO) concentration C: plant nutrients NO3- or PO4-3 D: bacterial count A: river→lake→aquifer B: river→ aquifer→ lake C: lake→ river→aquifer D: lake→aquifer → river E: aquifer→ river→lake A: decreased oxygen levels due to waste discharges B: decreased oxygen levels due to high summer temperatures C: high bacterial count in the water D: plant nutrient discharges from farms E: all of the above A: plant nutrients B: microorganisms C: sediments D: heat E: All of the above are considered to be pollutants. A: have low amounts of nutrients but a high amount of dissolved oxygen B: be clear with low dissolved oxygen C: have lots of fish D: have some “dead zones” due to increased BOD E: could have algal blooms in the fall due to increased nutrient (Phosphate/nitrate) load A: runoff from farm land B: runoff from city streets and other developed areas C: runoff form forests and undeveloped land D: deposition from the atmosphere E: treated wastewater discharges . Plant nutrients such as nitrates and phosphorous are classified as water pollutants because they: A: reduce the dissolved oxygen in water B: react with water to produce toxic compounds D: are harmful to humans E: are dangerous to aquatic organisms B: industrial and power plants C: global warming D: increased use of fossil fuels E: all of the above Primary sewage treatment is used to remove which of the following from the water? A: biodegradable solids B: both biodegradable and non-biodegradable solids C: disease-causing bacteria D: inorganic chemicals E: all water pollutants In a typical river, the oxygen sag curve is likely to be most severe during: A: winter B: fall C: spring D: summer E: none of the above A: reduce the input of fertilizer into watersheds by planting buffer zones B: mandate the use of low phosphate detergents in the drainage basin C: reduce the discharge of biodegradable wastes from feedlots D: require sewage treatment plants to better handle overflow so that there is no discharge even during heavy use or rains E: all of the above Biological Oxygen Demand (BOD) is a measure of: C: the amount of oxygen needed by micro-organisms and other aquatic organisms D: the concentration of water contaminants E: all of the above A: conductivity B: dissolved oxygen (DO) concentration C: plant nutrients NO3- or PO4-3 D: bacterial count E: sediment load A: it moves very slowly B: C: low populations of bacteria to decompose the wastes D: bacterial growth rate is slow because of low temperatures E: it is hard to reach for clean-up purposes. A: I and II only B: I only C: I and III only D: II and III only E: all of the above A: carbon dioxide B: C: iron D: bacteria E: nitrates A: non-point sources of water pollution B: sewage treatment plants C: groundwater pollution D: waste discharges from industrial plants E: waste heat discharges from nuclear power plants. All of the following are true of secondary sewage treatment, EXCEPT: A: it is mostly a biological process B: it removes most of the biodegradable pollutants in water C: it removes all phosphates, nitrates, and heavy metals D: it requires oxygen E: it is the stage where pathogenic bacteria are killed A: sludge can be used on cropland B: water is discharged into local watershed C: once chlorinated, water can be piped back into drinking water supply D: sludge may be used as landfill cover E: sludge can be used to produce methane power A: arsenic B: nitrates C: lead D: gasoline E: radium ©2023 ExamSoft Worldwide LLC. All Rights Reserved.