Give three differences between Aves and Mammals
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Aves (birds) and Mammals are two vertebrate groups. The key difference between them is that the Aves do not have mammary glands while Mammals have mammary glands. Kingdom Animalia is comprised of animals that are multicellular (metazoa) and unicellular (protozoa)
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Aves have a single ear bone, mammals have three. Ankle joint is between tarsals bones in aves while it is between tibia and tarsals in mammals. Aves don't have teeth, an adaptation required for flight, while mammals do. Aves have a keeled sternum, mammals don't.
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