(A) iodine (X)
(B) copper (X)
(C) fluorine (✔)
(D) iron (X)
Answers: For proper formation of teeth, fluorine is essential.
(A) iodine (X)
(B) copper (X)
(C) fluorine (✔)
(D) iron (X)
Answers: For proper formation of teeth, fluorine is essential.
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