Multiple choice

When ocean animals began transitioning onto land, what adaptation had to take place?

  1. smaller eyes

  2. internal ears into external ears

  3. sharp teeth into duller teeth

  4. fins into legs
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The transition of vertebrates from water to land required structural adaptations for support and movement on land, which involved the gradual evolution of lobed fins into limbs (legs).

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