The seabed is presently being mined in the U.S. for
A) phosphorite.
B) manganese nodules.
C) sand and gravel.
D) All of these are correct.
E) None of these are correct.
Correct Answer:
Verified
Q52: Submarine canyons are associated with
A) river systems.
B)
Q53: Acoustic profiling is used to study
A) sediment
Q54: Which of the following is NOT true
Q55: Lithification of sediments produces
A) coral.
B) turbidites.
C) mud
Q56: A sediment deposit close to the continental
Q58: The sediments of the central deep-ocean basins
Q59: Manganese nodule mining has not developed because
Q60: Seventy five percent of all marine sediments
Q61: The deep-sea floor, between 4000 and 6000
Q62: Guyots are flat-topped islands.
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