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What technological advancement was used during World War II as a means of locating things acoustically, based on sounds in the water?
A. Semaphore
B. Sonar
C. Bass ​

Respuesta :

josephammons23

Answer:

a

Explanation:
Answer is B 100%. Sonar uses sound waves o locate object. It’s definitely not Semaphore. That’s a system of flags for communication.

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