Harry was seeing a bird fly and was wondering why he cannot. Can you help him find one reason from the following?

Birds have solid bones.

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Birds have hollow bones.

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Birds have magical powers.

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Humans have hollow bones.

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Solution

The correct option is B Birds have hollow bones.
The bones of birds are hollow reducing their weight and making them fly. These hollow bones have an air filled cavity inside.

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Similar questions

Birds can fly because they have
(a) a streamlined body
(b) hollow bones
(c) wings with feathers
(d) all of these

Birds have pneumatic bones which help in flying. Pneumatic bone means

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