The amount of a pollutant remaining in the environment after a natural or technological process has occurred [ Choose ] pollution point source residual sustainable development natural pollutants The presence of matter or energy whose nature, location, or quantity has undesired effects on the environment [ Choose ] pollution point source residual sustainable development natural pollutants contaminants that come about through nonartificial processes in nature [ Choose ] pollution point source residual sustainable development natural pollutants any single identifiable source from which pollutants are released [ Choose ] pollution point source residual sustainable development natural pollutants management of the earth's resources such that their long-term quality and abundance is ensured for future generations