state - solid, liquid or gaseous pollutant, density - affects how quickly a pollutant will settle, point source - pollution from a single, identifiable outlet, diffuse source - pollution from many inputs, chemical reactivity - how easily new compounds form, direct - effects of pollutants on living organisms, indirect - effects of pollution causing harmful environmental changes, chronic - effects of pollutants appearing slowly and are long lasting, acute - effects of pollutants which are short term and appear quickly,

Pollution types

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