Environmental toxicants comprise a wide range of chemical or physical agents released into the environment (water, land, and air), and thereby produce adverse health effects in animals, plants, and microbes. Toxicants are man-made products, artificial products introduced into the environment due to human activity; examples are industrial waste products and pesticides
Humans are mostly exposed to a number of substances, many of which have known toxic and neurotoxic or endocrine-disrupting properties including lead and other heavy metals; commercial chemicals such as polychlorinated biphenyls (PCBs), dioxins, and other polycyclic aromatic hydrocarbons; pesticides; brominated flame retardants; and surfactants, cleansers, solvents . . .
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