The World Around Us!

They lay amniotic eggs which means it has a yolk and a shell. the yolk feeds the growing embryo providing nutrients and fats to help it grow. the waste goes to the Allantois which stores waste and exchanges oxygen and carbon dioxide. The amnion is the thin membrane which encloses the embryo and contains a floating liquid. Chorion is to protect the embryo and its vital parts. Albumen is the egg whites. This stores protein and water for the embryo. the egg shell provides protection and prevents water loss and is tough and leathery. The air sac is allowing the embryo to breath when hatching.