Normally the saliva is buffered at a pH close to 7. It is known that tooth decay occurs when the mouth pH drops below a critical level of about pH 4.5. Drops of pH occur after eating food containing lots of sugar. Suppose that you have discovered that some people have very high saliva buffer concentrations, while others have very low buffer concentrations. Explain your answer.
Buffers resist pH changes.
The pH in HB people should fall less than the pH in LB people. Because of this, HB people should have fewer cavities. Bacteria lower the pH by metabolizing the sugar to acids. You have a child with a high fever and must cool him quickly. You can put him in either cold air or cold water.