Biology

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

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Which of these animals goes through incomplete metamorphosis?
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What is a main reason that many species are becoming endangered?
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What does a lionfish have in its spiny fins?
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How many pairs of ribs are in a typical human body?
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Which of these senses would you use to tell how hot the sidewalk was?
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What is the anatomical name for the thighbone?
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Which of these body parts takes in food?
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The presence of clue cells would most likely be from what?
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