https://fr.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:atmospheric-pollution 2026-04-21T09:59:36.522011954Z Atmospheric pollution Air pollution has many sources and effects, both indoors and outdoors. This unit reviews photochemical smog, thermal inversion, atmospheric CO₂ and particulates, indoor air pollutants, reduction of air pollutants, acid rain, and noise pollution. unit