The FDA Code requires that water supply systems include O a method of aerating the water at designated checkpoints
o pipage composed only of PVC other plastic materials
O a backflow or back-siphonage prevention device
O regularly spaced emergency shutoff valves

Which of these is a sexual stereotype? a) on average, males are taller than females. b) people over the age of 60 are not interested in sex. c) male hormone levels differ from those of females. d) there are more male representatives than female representatives in congress.