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Can tou elaborate about HARRIS Boric Acid Roach and Silverfish Killer Powder. Thanks!
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- Besides mercury whichother heavy metals causetoxic pollution?a. Summarize (3-6 Sentences) any important applications of the element Nitrogen. b. Is there any biological application for the Nitrogen element in the human body? If yes- what is it? c. Are there any dangers associated with Nitrogen?A water quality control board reports that water is unsafe for drinking if the proportion of nitrate concentration exceeds 21% ppm. Water specimens are taken from a well. ?o: ??:
