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MMLU / Ichthyosaurs were aquatic dinosaurs. Fossils show us that they had dorsal fins…

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question

Ichthyosaurs were aquatic dinosaurs. Fossils show us that they had dorsal fins and tails, as do fish, even though their closest relatives were terrestrial reptiles that had neither dorsal fins nor aquatic tails. The dorsal fins and tails of ichthyosaurs and fish are

choices

  1. homologous.
  2. examples of convergent evolution.
  3. adaptations to a common environment.
  4. B and C only

subject

high_school_biology

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