Which of the following substances found in tobacco smoke stimulates the brain?
a. acetone
b. toluene
c. nicotine
d. ammonia

[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.

Summarize the neurobiology of addiction section in 3-4 sentences. summarize the evolutionary history of cravings in 3-4 sentences. then explain how the "science of getting hooked" article, and these issues, relate to your own life. then connect this discussion to recreational marijuana. new york state is getting very close to legalizing recreational marijuana, which is why they carried out the above study on potential impact of regulation. what are the potential health impacts cited in the above study if marijuana were to be regulated in ny? how do you think addiction would be impacted by regulated marijuana? considering what you now know about the brain, body and addiction, what are your thoughts on legalization of recreational marijuana in new york state?

Mark's girlfriend dropped him off at a party, and then she went to visit her best friend two blocks away. when mark called his girlfriend to get a ride home, he could tell she had been drinking. what is mark's best plan of action? ride home with someone else and let his girlfriend drive herself get a friend to take him to his girlfriend's car so he can drive them both home ask his girlfriend to drive to the party, and then mark will drive them both home let his girlfriend drive them home slow to avoid getting pulled over