4
Q:
A) contains fluoride to harden the tooth enamel | B) moistens food and helps stick it together to make it easier to swallow |
C) begins the chemical breakdown of starches | D) helps clean the mouth |
Answer: A) contains fluoride to harden the tooth enamel
Explanation:
Explanation:
Saliva is produced by the salivary gland which helps in food digestion.
Option A) contains fluoride to harden the tooth enamel is not the function of saliva.