Oceans

The average adult blue whale's heart weighs approximately how many pounds?

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What animal starts out life as a tadpole?
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An octopus has how many hearts?
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Which river represents almost 20% of the world's freshwater discharge into the oceans?
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Iceland is located in what ocean?
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The Titanic was how many feet from keel to bridge?
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Which species is known as the Devilfish?
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What does a shark's liver contain a lot of?
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The St. Lawrence Seaway opened in 1959 allowing oceangoing ships to reach which Minnesota city?
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