Which of the following statements is true? a. the decca navigation system is used today by the u. s. coast guard. b. sonar was developed during world war i to track the location of underwater mines. c. seismic profiling uses high frequency radio waves to map the surface of the ocean floor. d. all of the above. none of the above.
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Which of the following statements is true? a. the decca navigation system is used today by the u. s...
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