When playing volleyball a player must have . (Check all that apply) good height
proper body control
great arm strength
exceptional muscular coordination

True or false. mucous membranes secrete mucus that traps pathogens.

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine.what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.

Which of these is an example of how the media might perpetuate a sexual stereotype? a) a lesbian couple is shown adopting and caring for a child. b) a lesbian is depicted as masculine. c) a male homosexual is depicted as masculine. d) a homosexual relationship is shown to be commited and monogamous.