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Which one is a fish?
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Shark
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Whale
That's Correct!
It's Wrong!
The correct answer is "Shark". Sharks are classified as fish because they possess gills, a backbone, and are part of the Chondrichthyes class, characterized by a cartilaginous skeleton. In contrast, whales are mammals; they breathe air, give live birth, and nurse their young with milk. Thus, while both are aquatic animals, only sharks fit the definition of fish.
