List in tabular form any three differences between the base and the mammalian group
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Answer:
It should be bird rather then base
Explanation:
(1) Birds have beak and feather on their body unlike mammal whose characteristic feature is mammary glands and hair on the body surface.
(2)Birds consist of reduced renal portal system whereas it is absent in mammals.
(3)we can also mention here the flight adaptation of birds that is they have keel , phagostyle, pneumatic bones etc which is absent in mammals
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