Is the embryonic development in birds indirect or direct, Biology

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Q. Is the embryonic development in birds indirect or direct?

The embryonic development is direct there is no larval stage.

Q. What are the predominating chemical compounds respectively in eggshell, white and yolk?

The yolk is predominantly constituted of lipids but it also contains proteins and vitamins, the eggshell is basically made of calcium carbonate, the white or albumen is composed by albumin a protein.


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