A starfish is a _______.

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A Invertebrate
B Vertebrate
C Mammal
D None of the above

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Answer: A. Invertebrate

A starfish has no backbone, so it is an invertebrate. Even though its name has 'fish' in it, it is not a fish. It is a sea animal related to sea urchins.

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A starfish is a _______.

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