Answer:
The answer to this question is hydrochloric acid converts pepsinogen to pepsin!
Explanation:
All the other answers just don't make sense!
That statement is True
Over the past waters, the Eastern Europeans always have problems in obtaining clean fresh water
Not only it's scarce, but also filled with waste water, municipal, and industrial waste, which very dangerous for one's health
I am going with the second one. It may be wrong but I have a feeling it's the second one.
That impossible so don't worry about that
