Riot control agent. After September 11, 2001, the _____________ was established to provide a framework that provides a comprehensive national approach, applicable at all jurisdictional levels and across functional disciplines.
noun, plural: chemicals. (1) A substance made up of chemical elements or produced from a chemical process. (2) A drug, especially illicit or addictive drug. adjective. Of, relating to, or pertaining to, chemistry or a chemical substance.
2. chemical-of or made from or using substances produced by or used in reactions involving atomic or molecular changes; chemical fertilizer. noun compound, drug, substance, synthetic substance, potion The whole food-chain is affected by the over-use of chemicals in agriculture.