I hate when ur on the phone w someone and they are like watcha doin and ur like eating and they say hey weres my peice and u think i may be skinny on the outside but on the inside imma BIG bisch

Which is a direct benefit of prohibiting nicotine and tabacco use in schools?

[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.

Bloodborn pathogens are infectious microorganisms carried by what?