Answer: Herd Immunity
Explanation:
Herd immunity is referred to as the resistance of a population to the spread of a contagious infectious disease to which a large number of the population are immune to the disease, these are achieved through immunization often called vaccination.
Vaccination program have been successful against many infectious diseases that once killed, crippled, or incapacitated large number of members of a population.
Answer:
The three domains are the Archaea, the Bacteria, and the Eukarya.
Explanation:
Prokaryotic organisms belong either to the domain Archaea or the domain Bacteria; organisms with eukaryotic cells belong to the domain Eukarya.