The bacteria present in our mouth break down the sugars present in food to release . This damages the teeth and causes .

bases

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alkalis

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acids

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tooth decay

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Solution

The correct option is D tooth decay
If our mouth and teeth are not cleansed regularly, many harmful bacteria begin to live and grow in it. These bacteria break down sugar and produce acids. These acids damage teeth and lead to tooth decay.

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Sticky film of saliva, food particles and bacteria is called plaque. Bacteria present in the plaque can only affect the teeth.

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