Biology

What is the fin on the backs of fish, some whales and dolphins called?

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Which of these is not an insect?
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What are the claws of a bird of prey called?
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Natural pearls are found in what sea creature?
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What sea mammal has gotten trapped frequently in tuna fishing nets?
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What's the scientific term for an animal that eats the sort of foods humans do?
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Which of the following fish can adapt to both salt water and freshwater?
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What sort of plant has an internal system of tube-like structures?
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Which of the following was a category of organizing plants according to Aristotle?
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