The Characteristics of Rocks Quiz | Britannica

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Prof. Dr. Michael Bau/Jacobs University Bremen

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Thumbnail for the quiz, "Who Did That? A Historical Bio Quiz." Head with question mark made with string and pins.

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Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters

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