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Chemical pollution happens when certain compounds are improperly disposed of. This can affect the environment by disrupting the processes of the ecosystem. Chemical pollution happens when certain compounds are improperly disposed of. This can affect the environment by disrupting the processes of the ecosystem.
: a substance that makes land, water, air, etc., dirty and not safe or suitable to use: something that causes pollution.ull Definition of POLLUTANT. : something that pollutes. See pollutant defined for English-language learners. See pollutant defined for kids.