What are the two main reasons that cigarette smoking is so dangerous to developing babies

true

explanation:

a genogram (also known as a mcgoldrick-gerson study, a lapidus schematic or a family diagram) is a pictorial display of a person's family relationships and medical history. it goes beyond a traditional family tree by allowing the user to visualize hereditary patterns and psychological factors that punctuate relationships.

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there