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1 vote
_______ deficiency can cause the destruction of heart muscle. A. Iron B. Iodine C. Selenium D. Zinc

User Koonse
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2 Answers

3 votes
I would guess iron but Im not 100%

User Umeumeume
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4 votes
I think it is A IronĀ 
User Collin Krawll
by
6.9k points
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