Which demonstrates teamwork? a physician scrubbing down and donning a surgical mask before a surgery a physician and a respiratory therapist collaborating on administering effective care a hospital worker posting signs of the facility’s “no smoking” policy in waiting rooms an x-ray technician ensuring equipment is in working order

Microbes in the gut ferment fiber and complex carbohydrates and form vitamins, short chain fatty acids and

Describe the potential effects, on people, of unprotected exposure to the sun.give an example of 1 new thing have you learned about the sun’s uv rays.

[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.