21.   The chemical industry rivals said last November the venture would strengthen their competitiveness worldwide in producing dye chemicals for the textile industry.

22.   The group says irradiation robs food of its basic nutrients and produces new chemicals in the food that have not been adequately tested for safety.

23.   The loudest critics have contended that irradiation produces danger chemicals.

24.   The inspections are to deter Iraqi efforts to produce chemical,

25.   The plankton, he said, produce natural chemicals whose effect is similar to that of oil on the water.

26.   The plants also produce valuable chemicals such as hydrogen, ammonia, methanol and sulfur.

27.   They can expect another tough political battle, since the same utilities that produce nitrogen oxides also produce the chemicals that form acid rain.

28.   These highly reactive chemicals are produced by exposure to ultraviolet light and are known to be involved in reactions that damage the skin.

29.   Treated wood should not be burned in open fires or in stoves, fireplaces or residential boilers because toxic chemicals can be produced in the smoke and ashes.

30.   Treated wood should not be burned in open fires or in stoves, fireplaces or residential boilers because toxic chemicals may be produced in the smoke and ashes.