Who heads each of the branches of federal reserve banks and look after their functioning? board of directors board of governors reserve bank president managing directors

One of the students at your school posted akward and embarrissing pictures of another student online

[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.

What nutrients prevent osteoporosis? a. all vitamins and minerals b. calcium, vitamins c, d, and k, and magnesium c. protein d. carbohydrates