Question

..........nodules are formed on the ocean beds.

Answer 1

Answer:

Explanation:

Polymetallic nodules, also called manganese nodules, are rock concretions on the sea bottom formed of concentric layers of iron and manganese hydroxides around a core. As nodules can be found in vast quantities, and contain valuable metals, deposits have been identified as having economic interest.

Answer 2

Answer:

Polymetallic nodules are formed on the ocean beds.

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