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Name: Charlotte
Location: N/A
Country: N/A
Date: N/A
Question:
In birds air can pass through the brochial system in the same route in both inspiration and expiration, this increases the efficiency of oxygen uptake. Why is this?


Replies:
With every breath the air passes the tissue twice to allow gas exchange. This makes the breathing more efficient. It is thought that this is needed to allow flight, which is very energy intensive.

Trudy Wassenaar


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