Certain hallucinogenic drugs
can be isolated from plant insecticides
are typically taken in large amounts
can cause convulsions and possibly death from an overdose
can only be positively determined through the use of a specific microcrystalline test
are typically of a class of compounds called alkaloids

[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.

Answer these and you will be marked this is for 20 points

What is one limitation of the myplate guidelines