Question

14. The egg has several protective layers. The egg shell is called as calcite. Hens have incubation period of 21
days and hens sits on eges for several days. At last, the egg hatches.
(a) What is calcite?
(b) Define incubation period.
(e) Why does hen sits on eggs?
(d) What is hatching?​

Answer 1

Answer:

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