You inhale inhalants and Amphetamines you can smoke, inject, or ingest.
Food handlers can transfer chemical and physical contaminants to food while processing and working with the food.
The circulatory system. :)
True.
Circumcising is usually done due to religion or beliefs of the parents such as people who are Jewish. It was a big thing a while back as they believed it looked batter, that phase has since passed.
