1The factory's emissions released a pollutant into the air that caused respiratory problems for nearby residents.
2Is the new pesticide a pollutant that can affect the local wildlife?
3The government has implemented stricter regulations to reduce the amount of pollutants in the water supply.
4If we don't reduce our carbon footprint, pollutants will continue to damage the ozone layer.
5Scientists are studying the effects of microplastics as a pollutant in the world's oceans.