Question

why did salt have or contain iodine??​

Answer 1

Iodine (in the form of iodide) is added to table salt to help prevent iodine deficiency. Since the 1980s there have been efforts to have universal salt iodization. This has been an affordable and effective way to combat iodine deficiency around the world, but not all salt contains iodine, however.

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Answer 2

Answer:

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Explanation:

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