The second most important economic mineral resource extracted from the seafloor today is manganese from manganese nodules.
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Q72: Flat-topped volcanic structures located on the floor
Q73: Manganese nodules do not accumulate below 4500
Q74: The principal technique for finding ocean depth
Q75: Abyssal plains with sediments covering the seafloor
Q76: Sand,silt,and clays deposited on the ocean floor
Q78: The west coast of South America and
Q79: Turbidites and siliceous oozes are both biogenous
Q80: The continental rise lies at the bottom
Q81: What energy resource is present in the
Q82: The most extensive mountain range on Earth
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