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
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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