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प्रश्न
Fill in the blanks:
The mineral ..............is responsible for tooth decay.
उत्तर
The mineral fluorine is responsible for tooth decay.
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
Fill in the blanks:
The mineral ..............is responsible for tooth decay.
The mineral fluorine is responsible for tooth decay.