Low level ozone, or tropospheric ozone, is the most concerning type of ozone pollution in urban areas and is increasing in general. Ozone pollution in urban areas affects denser populations, and is worsened by high populations of vehicles, which emit pollutants NO and VOCs, the main contributors to problematic ozone levels.
กระดาษสําหรับเครื่องพิมพ์scb_mt_enth_2020 scb_mt_enth_2020