Question: o Question 19 (2 points) Saved Which correctly pairs an indoor pollutant with its source? (_) Formaldehyde and unvented space heaters (e) Oz and

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Question 19 (2 points) \" Saved Which correctly pairs an indoor pollutant with its source? (_) Formaldehyde and unvented space heaters (e) Oz and electrical arcing (_) Radon and glues and solvents () Nicotine and paint and paint thinners Question 20 (2 points) \" Saved What is the greatest source of indoor air pollution in developing countries? (_) Unvented space heaters (@) Cookstoves (_) Automobiles (_) Paint Question 21 (2 points) \" Saved Which unit is commonly used by utilities to measure the amount of electrical energy consumed

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