<prompt> All are indicators of Air pollution except:Soiling indexMcArdles indexSuspended paicle countSo2 concentration  <response>: Indicators of air pollution: Co2, Co So2 , No2 Air pollution index Soiling index Coefficient of Haze SPM - Best chemical indicator of air pollution - S02. - Best biological indicator of air pollution - Lichens. McArdles index It is an index of thermal comfo. Max P4SR Predictable 4 hour sweat rate: 4.5lit4hours. Beyond this death of person is imminent. 