Some factors could be:
weather
ressources
I would say d
hope it helped
The answer is C. A variety of antibiotics
The answer is Vaccination.
Acquired or adaptive immunity is the body's third line of defense. This is protection against specific types of pathogens. Acquired immunity may be either natural or artificial in nature. Both natural and artificial immunity have passive and active components. Active immunity results from an infection or an immunization, while passive immunity comes from naturally or artificially gaining antibodies.
Answer:
The awnser is atoms
Explanation:
Atoms are the building blocks of everything.
