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Manganese nodules are considered a valuable resource from the ocean floor because they are abundant and contain not only manganese but also?
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Manganese nodules are considered a valuable resource from the ocean floor because they are abundant and contain not only manganese but also?

User Jimeh
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Answer: iron (oxides of iron)

Explanation: manganese nodules usually contain layers of iron and manganese oxides in a concentric arrangement and are called polymetallic nodules.

User Talib Daryabi
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