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What marine resource has been rendered uneconomical due to the cost of excavation?

emalay516

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6 years ago

What marine resource has been rendered uneconomical due to the cost of excavation?

What marine resource has been rendered uneconomical due to the cost of excavation?
a. Magnesium compounds
b. Manganese nodules
c. Sand and gravel
d. Salt

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kellypooh97

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emalay516 Author

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6 years ago

Thank you, thank you, thank you!

DAGINC

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Thanks for your help!!

jblazah

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This helped my grade so much Perfect

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