| 1. | Five other members of the animal group are listed below.
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| 2. | It seems likely that they do not apply to most animal groups.
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| 3. | It occurs in all animal groups other than the mammals.
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| 4. | Birds are probably the largest animal group in the Atacama.
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| 5. | At least one microscopic animal group, the anoxic environment.
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| 6. | My articles are mostly on paleontology and modern animal groups.
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| 7. | A . These birds are among the few vocal-learning animal groups.
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| 8. | Birds have one of the most complex respiratory systems of all animal groups.
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| 9. | There are no exact statistics covering all animal groups.
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| 10. | Animal groups such as cassowaries are endemic to Australia.
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