The answer is:
B. Cell Cycle
Answer:
Vulture: a type of bird that eats decaying flesh.
Carrion beetle: the term for one of many beetles that can eat flesh or even bat droppings.
Blowflies: insects that munch on dead parts of live animals, like the dead flesh around their wounds.
Explanation:
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Number 39) is Keratin. and 40) is either c or d im not quite sure sorry