D because others are too high and can damage you if you try to calm down (sit down)
Cost about it to the next time you got home from the elementary and got
The answer is A. Cleanliness
<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>
