Answer:
The answer to this question is hydrochloric acid converts pepsinogen to pepsin!
Explanation:
All the other answers just don't make sense!
<span>Hello Matthancan, the central nervous system and the peripheral nervous system are two parts of a </span><span>nervous system.</span>
Answer:
Sugar
Explanation:
Sugar, because it give people diabetes.
Answer:
A typical example of a physical barrier to an infection is the <em>SKIN</em>
Explanation:
The skin is a protective coat that shields the tissue from exposure to physical contact, hence; act as a barrier to infection that would have easily penetrated into the body system. Skin has different layers that achieves this process, the outer layer, middle layer and the inner layer. every layer has its vital role to ensure infections are barred from entering the body through physical means
