Answer:
Possession of inherited adaptations that maximize fitness.
Explanation:
Basically ones that are best adapted for their environment. (I'm assuming "he" is Darwin?)
Thicker Skin, Fur, More Fat Content
After the macrophage fails the Helper T Cell stimulates the B cells if pathogen is extracellular and Cytotoxic T Cells if the pathogen is intracellular. Once the pathogen is killed the B Cells create Memory B Cells and the Killer T Cells create memory T Cells.
Answer:
dont know raadi solve your self
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