What was the motivating factor behind theodore roosevelt's conservationist ideas?

Which action is part of becoming involved in community health? a) supporting regional health efforts b)selecting reputable health providers c)creating new health issues to address d)traveling to new regions to promote global health plz i need to graduate

191) if you are a pt, which of the following are principles from the “code of ethics for the physical therapist? ” a. physical therapists shall be accountable for making sound professional judgments. b. physical therapists shall promote organizational behaviors and business practices that benefit patients/clients and society. c. physical therapists shall enhance their expertise through the lifelong acquisition and refinement of knowledge, skills, abilities, and professional behaviors. d. physical therapists shall respect the inherent dignity and rights of all individuals.

[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.