What is an example of Mid-Ocean Ridge

[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.

Part 2: nutritional program – create a diet plan for your profiled person to include: list the five basic food groups and the recommended amounts from myplate (20 points) which two groups should be more than half of your plate? which two groups should make up less than half of your plate? which one group sits to the side of your plate?give examples of a daily menu for your person including breakfast, lunch, dinner and snacks meeting the 5 food group daily amounts (40 points). total number of calories consumed daily (10 points). list five suggestions for healthy snack alternatives (20 points)

Which of the following is not a fitness benefit of cycling a: very effective at burning fat b: provides an upper body workout c: provides an aerobic workout d: good exercise for out of shape people