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Minerals are mined from all environments except from the ______________

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Minerals are mined from all environments except from the ______________

(a) ocean beaches

(b) sub-sea floor rocks

(c) continental shelves

(d) deep sea floor

This question was posed to me in an online quiz.

Enquiry is from Inorganic Chemical topic in section Inorganic Chemical Industries of Chemical Technology

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Right choice is (d) deep sea floor

For explanation: Minerals are mined from all environments except from the deep sea floor area even though it has large mineral deposits (clays, siliceous oozes, manganese nodules and so on) due to lack of advanced technology.

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