3 years ago

Write a scientific explanation that explains how oxygen and carbon dioxide travel within the seed and the egg.

1 answer:

6 0

The two membranes pull apart a little and create a small pocket or sack of air. As the developing bird grows, it breathes in oxygen from the air sack and exhales carbon dioxide. Several thousand microscopic pores all over the surface of the egg allow the CO2 to escape and fresh air to get in.

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