| http://www.w3.org/ns/prov#value | - ce ??? ??? ??? Industrial Smog A mixture of sulfur dioxide, droplets of sulfuric acid, and a variety of suspended solid particles emitted mostly by burning coal. (Gray Smog) ??? ??? ??? Wet Deposition A form of acid deposition; acidic rain, fog or snow. ??? ??? ??? Sick Building Syndrome Headaches, allergies, burning eyes, chronic fatigue and other symptoms caused by poorly vented indoor air conta
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