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OpenStudy (anonymous):
How do scientists use sonar to study earth's oceans? A. to measure underwater earthquakes B. to map the ocean floor C. to map ocean currents D. to measure water density
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OpenStudy (anonymous):
B.
OpenStudy (anonymous):
a sonar wave is sent and it bounces off of stuff that way they know how rocky or deep the seafloor is
OpenStudy (anonymous):
B
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