Digestive System WebQuest

8. How much saliva do you swallow a day? 9. Acids are measured from 1 to 10 on a pH scale. 1 is the most acidic. How acidic is the acid in your stomach and what is it strong enough to do? 10. Which of the three foods stays in your stomach the longest? Why? 11. With which food does the liver have to produce the most bile? Why? ................
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