Answer:
How Does the Immune System Work? When the body senses foreign substances (called antigens), the immune system works to recognize the antigens and get rid of them. B lymphocytes are triggered to make antibodies (also called immunoglobulins). These proteins lock onto specific antigens.
Answer:
I think it is B. Women has an episiotomy
Explanation:
I might be wrong if i'm right mark me
BRAINLIEST
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Answer:
it helps your heart pump when the person has choked or drowned
Because each body system has a completely different function.