Alright so where are the questions??
Alcoholics Anonymous helps people admit they have a problem. In most cases people don't want to admit they have a problem with alcohol. Being in this kind of program helps the individual(s) take steps to deal with their addiction. These kinds of programs also provide people with support groups. In most cases the support groups have other individuals with the same problem, these people understand what everyone is going through and they don't judge others.
Hopefully this gives you a general idea of what Alcoholics Anonymous is.
Making sure there are no poisonous gasses entering your lungs by covering your mouth and nose
Your answer to this is most likely:
He discovered many other important elements.
Clean the blood area with paper towels to remove most of the spill. Cloth towels should not be used unless they are to be thrown out.
