Question

why salt added with iodine
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Answer 1

Answer:

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.

Explanation:

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Answer 2

Answer:

Soon after in 1920, many countries around the globe began fortifying table salt with iodine in an effort to prevent iodine deficiency. The introduction of iodized salt was incredibly effective at eliminating the deficiency in many parts of the world.