What are the differences between animals belonging to the Aces group and those in the tnarnmaliu group?
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i .Body is covered externally with feathers. ii. They lay eggs. iii. No mammary glands are present.
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Aves are vertebrates who has the ability to fly. ... Aves have four chambered heart and they lay eggs and feed their young ones by the partially digested food. Mammals are differentiated from other animals by having mammary glands. They are multi cellular eukaryotic organism.
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