Tiffany has noticed that she can eat whatever she wants without gaining any weight. which of the following is probably true about her metabolism?
a. it is fast. (she requires a lot of calories.)
b. it is slow. (she doesn't require many calories.)
c. it could be decreased by exercising more.
d. she will likely gain weight as she gets older.

[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.

Arm circles are often effective dynamic stretches for swimmers because they

Prone a. front b. back c. facing up d. facing down anterior a. front b. back c. facing up d. facing down