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Question

Birds and mammals share one of the following characteristics as a common feature:
  1. Pigmented skin
  2. Pneumatic bones
  3. Viviparity
  4. Warm blooded

A
Pigmented skin
B
Pneumatic bones
C
Warm blooded
D
Viviparity
Solution
Verified by Toppr

  • Birds and animals both are warm-blooded hence, they can regulate their internal temperature irrespective of the temperature in the external environment

So, the correct option is D.

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