Multiple Choice
There is more gold in 1 km3 of the ocean than the amount of gold mined in all of recorded history.How come we do not mine the oceans?
A) It is too dilute to separate.
B) It would take too much energy.
C) It would cost too much.
D) all of the above
E) none of the above
Correct Answer:
Verified
Correct Answer:
Verified
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