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27 points
ECOTOXICOLOGIES is validvalid
ECOTOXICOLOGY, the study of substances that are harmful to the environment [n]
ECOTOXICOLOGY, the study of the destructive effect of waste materials, etc. on the environment [n]
ECOTOXICOLOGY, the study of substances that are harmful to the environment [n]
ECOTOXICOLOGY, the study of the destructive effect of waste materials, etc. on the environment [n]