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CBSE Class 6 Answered

hey guys   I have doubt   we need oxygen to live   but when a bird is in an egg how does it breathe
Asked by prasannasivaa | 07 Sep, 2015, 06:08: PM
answered-by-expert Expert Answer

Hi Sivaa,

Bird and reptile eggs have a hard shell. Under the shell are two membranes. Between the membranes is a small air cell, also called an air sack, filled with oxygen.As the animal develops it uses this oxygen,

Answered by | 07 Sep, 2015, 06:15: PM
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