The Evolution of Eggs
The evolution of eggs marks a significant milestone in vertebrate history, allowing birds to thrive in diverse environments with the development of hard-shelled eggs. Unlike their reptilian counterparts, which require moist conditions for their leathery eggs, birds can lay their eggs anywhere, thanks to a protective layer that retains moisture. The intricate design of eggshells, featuring thousands of pores for gas exchange, showcases the remarkable adaptation that supports the growth of chicks inside.In this clip
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Gastropod
The Incredible Egg (encore)
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