Think of a possible problem a firefighter might find while at an incident. Explain the problem and describe how a report would move through the chain of command in a fire department, beginning with a firefighter who initially discovers a problem. Your response should be at least 150 words.

Minute vessels that collect blood from the capillaries and join to form veins are: venoles venules viscera venoids

What is the answer to this particular question i have in health

[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.