I was on the phone to see if you wanted me a couple questions and I would be able answer questions on how
        
                    
             
        
        
        
Answer:
Specific cells within the gastric lining, known as chief cells, release pepsin in an inactive form, or zymogen form, called pepsinogen. By doing so, the stomach prevents the auto-digestion of protective proteins in the lining of the digestive tract.
Explanation:
Make sure to edit so you don't get copy-writed
 
        
             
        
        
        
Answer:
zero
Explanation:
I I think one should be so accurate with measurements and experiments
 
        
             
        
        
        
Answer:
a mixture of molecules - Box f
atoms of a pure elementa metal - Box D
a solid compound - Box C
a mixture of elements - Box A
Explanation:
Box a has mixture of elements which forms a solid like shape but there are different elements present in the box. The box f has mixture of molecules in which many atoms are combined together. Box c has solid compound with single element.