Answer:
they inject people with small amounts of deadly viruses to get us immune to it so its harder for the body to get sick. like the flu shot it basically kind of has the flu in it and when you get injected with it the body gets immune to it so its harder for you to get sick with the flu because your bodies already immune to that virus hopefully this helped
Explanation:
Weight loss pills, starving, puking food up, over exertion..
<span>Larry is taking a walk in the park. The pollen in the air makes him sneeze constantly. The line of defense that is his immune system exhibiting is that of "(A) f</span>irst line of defense." There are only 3 lines of defense in the immune system. The first line of defense <span>are a combination of physical and chemical barriers that prevent all types of foreign agents from penetrating the outer layer of the body. In this case, it is the nasal cavity.</span>
This is an example of RELEARNING. Relearning is a method of retrieval used to facilitate the remembrance of a memory that has been stored long time ago. Relearning is also called saving method, it can be a mean of measuring retention by measuring how fast one remember forgotten skills that have been learned previously.
