Archive
7th of September 2015
Biology
Q:

hey guys


I have doubt


we need oxygen to live


but when a bird is in an egg how does it breathe

Sivaa Bala - CBSE - Class VI

Monday, September 07, 2015 at 18:08:PM

A:

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,

Monday, September 07, 2015 at 18:15:PM