A. birds are generally bigger in size
B. embryonic development is longer in birds
C. those of birds are fertilized internally
D. birds lay shelled eggs
Correct Answer:
Option B – embryonic development is longer in birds
A. birds are generally bigger in size
B. embryonic development is longer in birds
C. those of birds are fertilized internally
D. birds lay shelled eggs
Correct Answer:
Option B – embryonic development is longer in birds
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