why is a system in your body called immune system if your not really IMMUNE to all the disese that atacks your immune system. lol i just though of this

I think its because we're not exactly immune to all the diseases, it's called the immune system because the cells defend the body from bad bacteria and it teaches your body to learn to fight against the bacteria from a virus/disease until the body is immune.

Explanation:

We are not immune to everything becasue new diseases and viruses keep coming lol

Explanation:

answer; thinker;

including the octave, the answer would 8 notes in a major scale with one note being played twice. ex) c major scale includes: c, d, e, f, g, a, b, c

notice that c is played twice

however, if you were to ask me how many different notes are in a major scale- the answer would be 7.