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- As underwater exploration continued, Robert Ballard, marine scientist realized scuba divers and submersibles*^*were limited in how far they could descend.
Question 1:
As underwater exploration continued, Robert Ballard, marine scientist realized scuba divers and submersibles*^*were limited in how far they could descend. His name has become ....... with pioneering the use of remote*^*controlled vehicles for exploration. A. synchronize
B. sympathetic
C. synonymous
D. syncline
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