Why are X-ray devices and CT scans used in the medical field?
O to dispose of chemical wastes
O to reduce the risk of medication errors
O because they have no potential harmful
effects
to create images of the internal structures of
the body

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