Oceans

Which of the following traits are used to help classify whales as mammals?

More Questions from Oceans
A low-oxygen area of the ocean is often referred to as what?
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What type of sea creature is an Orca?
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An octopus has how many hearts?
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What is a high place from which rivers flow in all directions?
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The hadal zone begins at what depth?
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Which of these is considered the world's smallest fish?
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How many chambers does a fish heart have?
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Iceland is located in what ocean?
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