Question
Why do brads not have respiratory trouble at the time
of flying at high all?Solution
The avian respiratory system delivers oxygen from the air to the tissues and also removes carbon dioxide. In addition, the respiratory system plays an important role in thermoregulation (maintaining normal body temperature). The avian respiratory system is different from that of other vertebrates, with birds having relatively small lungs plus nine air sacs that play an important role in respiration (but are not directly involved in the exchange of gases).
Solve the equation:sin(x) + cos(x) = 2·sin(x + α). Then the value of α is:
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