Question

sort the pollutant into its correct category.
coal - burning particulates
waste incinerator gases
carpet dust and dirt
cat litter box
vehicle exhaust
carbon monoxide
indoor air pollutant
outdoor air pollutant

Explanation:

Indoor air pollutants are those that are present within enclosed spaces like homes. Carpet dust and dirt and cat litter box are typically found indoors. Outdoor air pollutants are released into the open - air environment. Coal - burning particulates (from power plants etc. outdoors), waste incinerator gases (released outdoors), vehicle exhaust (from cars on roads outdoors) are outdoor pollutants. Carbon monoxide can be both indoor (from faulty heaters etc.) and outdoor (vehicle exhaust), but in a general sense, if we consider major sources, vehicle exhaust (a major source of CO) is outdoor.

Answer:

Indoor Air Pollutant: carpet dust and dirt, cat litter box
Outdoor Air Pollutant: coal - burning particulates, waste incinerator gases, vehicle exhaust, carbon monoxide