I WONDER - Why Do Birds Have Hollow Bones?

Birds have hollow bones that make them lighter and are part of their respiratory system, aiding efficient breathing and flight. Despite being hollow, these bones are strong and dense enough to support flight. Penguins, however, have dense bones to help them dive deep in water, as they do not need to fly.

Why do birds have hollow bones?

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How do the hollow bones of birds assist in their flight?

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What is the significance of the density of bird bones?

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Why do penguins have dense bones instead of hollow bones?

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Explain why penguins cannot fly and how their bone structure supports their lifestyle.

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