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Biology, 21.11.2019 19:31 giany

Ascientist is using sonar to map the ocean floor while traveling on the ocean surface in a ship. she observes that the first sound pulse returns from the ocean floor much more quickly than the second sound pulse. what can she conclude based on this information?

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Ascientist is using sonar to map the ocean floor while traveling on the ocean surface in a ship. she...
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