Answer:
The correct answer is herd immunity
Explanation:
Herd immunity is a type of immunity provided by the major population which is vaccinated or immune against an infectious to some individual of their community which is not immune to that infection.
Herd immunity is generated only when most of the population is immune to that particular disease. For example, in measles, 90-95% of a population should be vaccinated against measles to provide herd immunity to the un-immune individuals. So the correct answer is herd immunity.
<em>Multiple births of as many as eight babies have been born alive.</em>
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Interacting with Other Systems. The digestive system works very closely with the circulatory system to get the absorbed nutrients distributed through your body. The circulatory system also carries chemical signals from your endocrine system that control the speed of digestion.
Pregnancy can contribute to morning sickness
