How Pterosaurs Filled Their Lungs
Por um escritor misterioso
Descrição
Imagine a balloon inside a cask. There’s an opening at the top to blow air into, but here’s the problem – the balloon hugs the wooden walls of the chamber. There’s nowhere for the balloon to expand into and no way for old air to be pressed out. The sides of the barrel won’t move. […]
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How Pterosaurs Filled Their Lungs
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