What are the features of mammalia? |
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| Ans : The characteristics of aves are as follows:
(A) Their body is covered with hair.
(b) They give birth to children and nurse them.
(c) They breathe through the lungs.
(d) There are four chambers in the heart.
(e) Most organisms have a pair of external ears.
Example: Humans, bats, whales, cows, buffaloes, etc.
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