ChEBI

Any environmental contaminant that is resistant to environmental degradation through photolytic, biological or chemical processes. Such substances can have significant impact on health and the environment, as they persist in the environment, bioaccumulate in animal tissue and so biomagnify in food chains.

A role played by a chemical compound which is known to induce a process of carcinogenesis by corrupting normal cellular pathways, leading to the acquistion of tumoral capabilities.

Any compound that can disrupt the functions of the endocrine (hormone) system

Strictly, a substance intended to kill members of the class Insecta. In common usage, any substance used for preventing, destroying, repelling or controlling insects.

Strictly, a substance intended to kill pests. In common usage, any substance used for controlling, preventing, or destroying animal, microbiological or plant pests.