Answer:
Number 3
Explanation:
Number 3 or C is correct, "action of white blood cells when certain bacteria enter the body." This is the correct answer because white blood cells are in your body to fight off infections. some peoples immune system see these bacteria on the peanut, egg, or milk as an enemy so it tries to fight against it even though it is harmless to the body.
Answer: False
Explanation:
Some organisms have an advantage with some traits, but they could be a disadvantage in other situations.
that is has a nucleus and also a cell wall
D. Producir anticuerpos específicos para un patógeno