This is how vaccines are used. You introduce the antibodies in a vaccine so the person builds up an immunity and never develops the disease
Its A. The adenoids and Tonsils. Adenoids are a patch of tissue thats high in the throat, directly behind the nose. They, along with the tonsils, are parts of the lymphatic system. In simple terms it helps stop infection and keep many body fluids in balance. They basically trap the germs that make their way through the mouth and nose. To add on, when the tonsils become inflamed either by taking too much germs or bacteria, thats what tonsillitis is. Hope this helps
D, by allowing that they never engage in risky behaviors. Knowledge about health can help people understand why some things are risk and why some things aren't.
All of the above Because You work on it any time else and your bones wont be as strong as you grow older if you work on it all the time you have stronger bones
