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| Animal Behavior | 1 |
| Animals | 1 |
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| Discover | 1 |
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| Diamond, Jared | 1 |
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Diamond, Jared – Discover, 1983
Speculates why animals have not developed wheels in place of inefficient legs. One study cited suggests three reasons why animals are better off without wheels: wheels are efficient only on hard surfaces, limitation of wheeled motion due to vertical obstructions, and the problem of turning in spaces cluttered with obstacles. (JN)
Descriptors: Anatomy, Animal Behavior, Animals, Evolution
