Jenny is trying to lose weight and has decreased her
energy intake by 250 kcal per day. how long should it
take her to lose 1 lb of body fat?

Pam currently runs on a track an hour a day, three days a week. how can she increase the intensity of her runs? start running five days a week start running in hilly areas or trails switch to walking six miles each day add 20 minutes to each run

Which action can lead to intentional injuries? a. burning your in hot water b. avoiding illegal drugs c. getting in a bike crash d. being hurt in a robbery (! this is for apex if any can relate : ( .)

[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.