<em>Vaccines work by simulating an illness to help establish immunity. However, while this sort of infection nearly never produces sickness, it does trigger the immune system to create T-lymphocytes and antibodies. The imitation illness can sometimes induce modest symptoms, like as fever, after receiving a vaccination.</em>
<em></em>
<em>- RobertOnBrainly</em>
C. Alternating binge eating and purging through vomiting, laxitives, or diuretics
Your body breaks down food into protein in which the protein will then help to heal any problems your body has, like a broken bone. Protein can also help your bones to gain more strength, if your bones are stronger they are less likely to break.
For the second question, I think you're asking what are your nose and ears supported by, and if you are I think the answer would then be "cartilage."
I hope these answers helped you. :)