)alex's doctor says he has great strength and flexibility, but she is worried about alex's cardiorespiratory health. the doctor asks him to list the activities he participates in regularly. alex lists weightlifting, karate, rollerblading, and bowling. which activity should alex's doctor encourage him to participate in more often to increase his cardiorespiratory health?
a. weightlifting
b. karate
c. rollerblading
d. bowling

Smoking cigarettes is a pervasive habit found in many parts of the world and a habit that could be explained by both microsociological and macrosociological forces. give an example of each that would be relevant to explaining the proliferation of smoking. how might your suggested micro- and macro-level analyses be linked

17. explain why or why not you might choose to utilize alternative, complimentary, and integrative/or medicine. explain how these types of medicine are different from traditional (orthodox) medicine?

[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.