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Question
What are the differences between animals belonging to the Aves group and those in the mammalia group?
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Solution
| Aves | Mammals | |
| 1. | Most birds have feathers and they possess a beak. | They do not have feathers and the beak is also absent. |
| 2. | They lay eggs. Hence, they are oviparous. | Some of them lay eggs and some give birth to young ones. Hence, they are both oviparous and viviparous. |
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