List of infastructure of a development

List three reasons people may begin using tobacco

[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.

Question 3select the appropriate responeveluefataliureggie purchased a life insurance policy with a face amount of $500,000. after 15 years, the cashvalue has accumulated to $100,000 and the policy's face amount has become $600,000. which type olife insurance policy is this? e el aaais oeconn. oueas allueadjustable life=fdesfeelfeelo credit life=lt-=eteo modified lifeeletillseeenerifetuniversal life=fdelede=18 of 20 questions remaining..wewewenner-.=mawwesten1 23456789 10 11 12 13 14 15 16 17 18 19 20.