Why the flying birds are known to have double respiration
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In humans, both the nostrils inhale and exhale at same time. In birds, while one nostril exhales, the other inhales. this is why the birds need a constant supply of oxygen to fly.
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ExplanatiIn humans, both the nostrils inhale and exhale at same time. In birds, while one nostril exhales, the other inhales. this is why the birds need a constant supply of oxygen to fly.on:
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