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- The process whereby oxygen is depleted by the growth of microorganisms due to excess nutrients in aquatic systems is called _________. a. dead zoning b. eutrophication c. retrophication d. depletionWhy are drinking water supplies still a major concern for many countries?Which potential source of water pollution is a nonpoint source? Sewage treatment plant Electric power plant Active or inactive coal mine Logged forest Factory
- Identify TWO specific sources of pollution in the Ellerbe Creek watershed. Short answer please.Explain how streams can cleanse themselves andhow these cleansing processes can be overwhelmed.What is wastewater? Describe the state of streampollution in more- and less-developed countries.Give two reasons why lakes cannot cleanse themselves as readily as streams can. Distinguish betweeneutrophication and cultural eutrophication. Listways to prevent or reduce cultural eutrophication.Explain why groundwater cannot cleanse itself verywell. What are the major sources of groundwatercontamination in the United States? List ways to prevent or clean up groundwater contamination. Listsome ways to purify drinking water. Describe the environmental problems caused by the widespread useof bottled water.A lake with low nutrient levels and very clear water is called eutrophic oligotrophic a dead zone a septic zone oxygen depleted
- which of the following statements about algal bloom and eutrophication is true? 1. Eutrophication is typically caused by the removal of nitrogen and/or phosphorus 2. algal blooms cannot produce toxic substances that threaten drinking water 3. when algae in an algal bloom die, decomposition produces excess oxygen, which can kill fish 4. algae populations grow when limiting nutrients become more availablePlease select any ten (10) of the following terms and provide brief, but complete definitions (1-2 sentences) of: Freshwater wetland, hydric soil, obligate hydrophyte, facultative hydrophyte, halophyte, oligohaline esturarine wetland, spring high tide, low salt marsh, zonation, N.W.I., Ramsar, wetland restorationWhich statement offers the best explanation of how deforesting hubbard brooks watershed (W2) affected the nitrogen cycle? 1. Denitrification rates increased, resulting in a decrease in the export of ammonium 2. Microbial immobilization rates increased, resulting in a decline in stream nitrogen 3. Mineralization rates increased, causing the export of ammonium to increase 4. plant uptake nitrogen stopped, resulting in an increase in the export of nitrate
- Explain how streams can cleanse themselves ofoxygen-demanding wastes and how these cleansing processes can be overwhelmed. What is wastewater? Describe the state of stream pollution inmore-developed and less-developed countries.Give two reasons why lakes and reservoirs cannotcleanse themselves of pollutants very well. Define and distinguish between eutrophication and cultural eutrophication. List three ways to prevent orreduce cultural eutrophication. What are the majorsources of groundwater contamination in the UnitedStates? Explain why groundwater cannot cleanseitself very well. List three ways to prevent or cleanup groundwater contamination. List some ways topurify drinking water. Describe the purification ofdrinking water in more-developed and less-developedcountries. Describe environmental problems causedby the widespread use of bottled water. How are lawsused to protect drinking water in the United States?List three ways to strengthen the U.S. Safe DrinkingWater Act. Describe how…Eutrophic lakes are characterized has having very high nitrogen content. True FalseWhich of the following is a point source of pollution? a runoff from multiple large agricultural fields that carries chemicals like fertilizers and pesticides b sewer overflow of untreated waste c runoff from multiple farms pollutes a small lake d runoff that carries oil and spilled chemicals off interstate highways