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Mathematics 14 Online
OpenStudy (anonymous):

what are contaminates

OpenStudy (mokeira):

Contaminants are unwanted chemicals in the environment or in living organisms, which may be harmful to plants, animals or humans.

OpenStudy (anonymous):

Contaminants are unwanted chemicals in the environment or in living organisms, which may be harmful to plants, animals or humans. Every year, many thousand chemicals are produced and used.

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