(polychlorinated biphenyl) in the environment largely came from which of the fol

Question

(polychlorinated biphenyl) in the environment largely came from which of the following? a. Animal Manure Spread on Land b. P c. Fertilizer from Lawns d. Salt spread on the road during the winter 39) PCB roducts manufactured years ago including Electrical Transformers 40) The term POP in this course stands for what? Primary organic pollutant Persistent organic pollutant Persistent organic Phosphorus Perfect oven-fired Pizza a. b. c. d. 41) When forested land is cleared and replaced with a residential development, the amount of and the amount c f water that here sourc Soil C water that soaks into the ground when it rains runs off directly into streams -compared to when it was a forest. a. Increases, Decreases b. Increases, Stays the same c. Stays the same, Increases d. Decreases, Increases 42) What is the larger cause of impairments and pollution to US water bodies? Point sources such as effluents from factories and municipal wastewater Non-point sources such as rain runoff from city streets, farms, and other areas a. b. 43) Which of the following is NOT one of the ways we discussed in class that might explain the observed decline in TFR globally over the past 50 years? a. Education b. Economic Factors c. Technological Factors d. Improved Childhood Survival 44) While many factors in Flint, Michigan contributed to the poor water quality the citizens of Flint experienced in their tap water, the technical cause of failure was which of the following? a. b. c. d. Lack of Corrosion Control resulting in lead leaching from pipes Installation of substandard lead pipes that were against regulations Lead in the Flint River Failure to remove lead pipes from the city water treatment plant 45) Which of the following is a way to prevent contamination of streams and rivers with pathogens? a. b. c. d. Proper septic system maintenance Stormwater wetlands Avoid eating shellfish from contaminated waters Promote healthy stream ecology

Explanation / Answer

39) b. Products manufactured years ago including electric transformers.

Note: Polychlorinated biphenyls (PCBs) are made by man.

They are very stable and can withstand high temperature and pressure.

They are used in electrical instruments such as capacitors and transformers.

40) b. Persistent organic pollutant

POP stands for Persistent organic pollutant ,POPs are highly resistant to degradation by

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