Before revision: Specific groups of pollutants Many pollutants are within the following notable groups: Environmental Persistent Pharmaceutical Pollutants (EPPP) Greenhouse gases (GHGs) Particulate matter (PM) Persistent organic pollutants (POPs) Polycyclic aromatic hydrocarbons (PAHs) Volatile organic compounds (VOCs) Light pollutant Light pollution is the impact that anthropogenic light has on the visibility of the night sky.
After revision: Specific groups of pollutants Many pollutants are within the following notable groups: Environmental persistent pharmaceutical pollutants (EPPP) Greenhouse gases (GHGs) Particulate matter (PM) Persistent organic pollutants (POPs) Polycyclic aromatic hydrocarbons (PAHs) Volatile organic compounds (VOCs) Light pollutant Light pollution is the impact that anthropogenic light has on the visibility of the night sky.