. The migratory bird always
The migratory bird always prefers to fly at high altitude because it
a) involves less energy.
b) gives a better view.
c) faces less predators.
d) indicates the sun’s position accurately.
Best Answer
(a) involves less energy.
Explanation: Migratory birds fly at high altitude because the wind flow is helpful and the cold conditions allow them to disperse the heat generated by their flight muscles.
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