Question

birds have provide with baloon like air sacks . state one
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Answer 1

Answer:

Breathing. Birds have an efficient breathing system, with two lungs that have special balloon-like air sacs. These air sacs spread into different parts of a bird's body, including the hollow parts of the larger bones.

Explanation:

Answer 2

Answer:

A bird's lungs contain parabronchi, which are continuous tubes that allow air to pass through the lung in one direction, and air sacs. ... The air sacs, which fill a large proportion of the chest and abdominal cavity of a bird, are balloon-like structures at the ends of the airway system.

Explanation:

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