Which of the following are properties of good indicator organisms for water quality? Select all correct answers. not found in the presence of pathogens. better survival rates than pathogens. present whenever pathogens are present in water. capable of reproduction in contaminated waters. incapable of reproduction in contaminated waters. absent in uncontaminated water present in uncontaminated water (endemic) worse survival rates than pathogens.
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- Water contaminants fall into two general categories, chemical and biological. Describe each category. What are disinfecting by-products (DBPs)? How are people exposed? What are the toxic effects? Which of the emerging public health issues related to water do you believe will have the most impact on the future of safe drinking water?What personal efforts can you and others commit to reduce the number of plastic bottles that end up in the landfill? Provide at least 2 examples of how to reduce your use of plastic bottles. Describe what leachate is and how it is formed. Be specific in the steps of how it forms. What are the potential health issues of leachate? How could that affect persons living closest to the landfill?Indicate whether the following statements about the Clean Water Act (CWA) are True or False. Overall, the CWA has significantly increased the # of streams that are fishable and swimmable since the 1960's The CWA sets standards for drinking water Fines set by the CWA for polluting are often lower than the cost for a company to dispose of wastes legally, and thus companies continue to pollute The CWA does not allow any company or agency to discharge any amount of toxic chemicals or other pollutants into navigable waters
- Contamination in groundwater has no risk of getting into the surrounding environment because groundwater is stable and stays in place. True FalseMatch the descriptions with the correct type of water pollution. Group of answer choices run-off from mines [ Choose ] plant nutrients organic chemicals oxygen-demanding wastes inorganic chemicals thermal sediments infectious diseases heavy metals nitrates and phosphates [ Choose ] plant nutrients organic chemicals oxygen-demanding wastes inorganic chemicals thermal sediments infectious diseases heavy metals bacteria and viruses [ Choose ] plant nutrients organic chemicals oxygen-demanding wastes inorganic chemicals thermal sediments infectious diseases heavy metals cooling machines of nuclear power plants […Describe the process of Eutrophication. Make sure to include ALL of the steps involved and what the outcome is for organisms living in the water.
- Activated sludge method removes BOD Nutrients Inorganic chemicals. Bacteria Question 15 Hazardous wastes can be disposed of using Incinerator Injection well Landfill All of the above Question 16 According to the EPA, wastes are classified as hazardous if They are included on the F, K, P, or U lists They are toxic, corrosive, ignitable, or reactive They contain radioactive materials. All of the above D Question 17 The largest source of municipal solid waste is. Plastics O Paper and paperboard products Food O GlassWhat are the storage requirements for live seafood? (Answer true or false in space provided) Live fish are stored in aquatic tanks and live shellfish can be kept covered in the coolroom for a limited time. Live seafood must be checked regularly and any sick or dead animals must be eaten immediately. The tanks must be monitored in regards to temperature, salt content and regular maintenance tasks. Display tanks are available to allow for ideal conditions for cold water, tropical and freshwater species. True or False T f T T Molluscs not stored in tanks are best kept fresh in a container containing fresh f water, to imitate sea conditions.What is an advantage of deep-well disposal of liquid hazardous wastes? Liquid wastes are safer than solid wastes. Well casings never leak. Waste production is discouraged. Carbon dioxide and other air pollutants are not emitted. Wastes can often be retrieved.