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Biology, 17.12.2020 02:00 harris435942

What does an echo sounder do? -allows divers to better hear under water
-uses sound waves to map the ocean floor
-documents sound at the deepest region of the ocean
-eliminates all echoes when divers are communicating underwater

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What does an echo sounder do? -allows divers to better hear under water
-uses sound waves to...
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