First: Scarring
Scarring has nothing to do with defense
Second: False
Its B and T cells (lymphocytes)
Third: B cells
B cells produce antibodies
The organism is the highest level of hiearchy
Food pyramid, because it is a healthy way to show what your eating, and the foods you need to cut out, and the foods you need to eat more.
It is different because children heal faster than adults. Plus our bones are more grown then there's are
