Answer:
If one wound got a scar and another didn't than the one with the scar went deep enough for the extra layer to come in.
Explanation:
A scar happens depending on how deep the wound is.
Answer: the relatively short-lived activated cells that defend the body in an immune response
Explanation - So they basically respond to short lived cells -v-
Answer:
people with type O blood have no antigens present
Are there any questions to this statement??
