Some animals, like birds, reproduce by fusion of cells. Before a bird hatches, what protects the bird as it develops? A. The warmth of the sun? B. The thin shell of the egg? C. The hard shell of the egg?

Some animals, like birds, reproduce by fusion of cells.

Before a bird hatches, what protects the bird as it develops?

A. The warmth of the sun?

B. The thin shell of the egg?

C. The hard shell of the egg?

D. The nutrients from its mothers body?

2 Answers

Some animals, like birds, reproduce by fusion of cells. Before a bird hatches, what protects the bird as it develops? A. The warmth of the sun? B. The thin shell of the egg? C. …

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