Parasites need a host. If a host tries to get rid of the parasite or kill it, then the parasite either has to leave the body or die.
It disappears from existence completely, idk. ask your teacher. hope this helps!
Answer:
Argon
Explanation:
The element that has a complete valence electron shell is argon (Ar) since it is a noble gas in the last group on the periodic table. destinymitchell966