Which health risk is applicable to workers in the retail sector?

1. exposure to toxic chemicals in cleaning agents

2. back injury due to incorrect sitting posture

3. contracting of blood-borne diseases

4. injuries associated with lifting loads

How can lung cancer best be prevented? a. by getting regular screeningsc) b. by avoiding cigarette smokec. by monitoring cholesterol levelsd. by avoiding nown allergensherrwww

[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.

Genetically modified organisms can include icecream. true or false