Which process is a source of outdoor air pollution? O releasing mold particles from an air conditioning vent
O emitting particles from a dump truck
O releasing radon gas from a generator
O emitting carbon monoxide from a heater

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6