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Oceans
What instrument uses sound waves to help get a picture of the ocean's bottom?
Oceans
What instrument uses sound waves to help get a picture of the ocean's bottom?
Sonar
Dolphin Clicks
Whale Song
Seismographs
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The longest river in Europe flows into what sea?
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What does a shark's liver contain a lot of?
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What time and day did the Titanic collide with the iceberg?
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A finless porpoise takes its name from a near-complete lack of which fin?
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Green sea turtles can stay underwater for up to how many hours?
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What type of algae live symbiotically with coral reefs in shallow waters?
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French Frigate Shoals reef is located where?
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A low-oxygen area of the ocean is often referred to as what?
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