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Which of the following is not a function of saliva?

contains fluoride to harden the tooth enamel
moistens food and helps stick it together to make it easier to swallow
begins the chemical breakdown of starches
helps clean the mouth

Correct Answer: contains fluoride to harden the tooth enamel

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.

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