Immunocompetence: Means to have a normal immune response to germs and other bacteria invading your body.
Yes. Dancing involves the most amount of oxygen going in and out of the system, thus burning more calories and being "high impact."
A peer is someone who is the same age as you, and they do not have to even know you. You might be friends, you might not. They might be a student that's in the same grade as you.
basically, a peer is a student that is around your age.
<span>a hypothetical force formerly held to pervade all nature and to manifest itself in magnetism, mesmerism, chemical action, etc.</span>