Answer:
3
Explanation:
there are three different types of neurons in the human body
The answer would be, Stop smoking, walk to school instead of driving to school, use recyclable products.
Explanation:
is that the full question you have written in there cause i think some are missing
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) first 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>
