(a) Explain why the pH in a person’s mouth becomes lower after each meal. (b) What … eating habits to lessen chances of suffering…
(a) The pH in a person’s mouth becomes lower after each meal because bacteria present in the mouth breaks down the sugar to form acids.
(b) If the pH is low, the tooth starts decaying.
(c) A person can lessen the chances of suffering from tooth decay by changing his eating habits such as eating less of sugary foods like ice-creams, candies, sweets etc.