44) adsorption is the phenomenon of collecting organic substances to solid surfaces. absorption means permeability of fluids across membranes. desorption is the release of substances from a surface. 45)vitrification is called glassification. 46)the first broad-spectrum pesticide is DDT(dichlorodiphenyltrichloroethane) 47)The generator is the person who generates hazardous wastes. 48)Polychlorinated dibenzodioxins or otherwise known as dioxins are a group of polyhalogenated organic compounds that vary greatly in the degree of toxicity. 49) CNS depressants are the chemical compounds that exhibit its effect on the central nervous system and is far from the site of entry( probably oral entry). 50)Resource Conservation and Recovery Act(RCRA) controls hazardous and solid waste creation. 51)The environmental protection agency was established on december2, 1970. 52)The Comprehensive Environmental Response, Compensation, and Liability Act was signed on December 11, 1980. 53)A sustainable chemistry is the design of chemical products and processes that reduce or eliminate the use or generation of the hazardous substance is GREEN CHEMISTRY. Solution 44) adsorption is the phenomenon of collecting organic substances to solid surfaces. absorption means permeability of fluids across membranes. desorption is the release of substances from a surface. 45)vitrification is called glassification. 46)the first broad-spectrum pesticide is DDT(dichlorodiphenyltrichloroethane) 47)The generator is the person who generates hazardous wastes. 48)Polychlorinated dibenzodioxins or otherwise known as dioxins are a group of polyhalogenated organic compounds that vary greatly in the degree of toxicity. 49) CNS depressants are the chemical compounds that exhibit its effect on the central nervous system and is far from the site of entry( probably oral entry). 50)Resource Conservation and Recovery Act(RCRA) controls hazardous and solid waste creation. 51)The environmental protection agency was established on december2, 1970. 52)The Comprehensive Environmental Response, Compensation, and Liability Act was signed on December 11, 1980. 53)A sustainable chemistry is the design of chemical products and processes that reduce or eliminate the use or generation of the hazardous substance is GREEN CHEMISTRY..