Answer:
The eagle is flying at a lower elevation than the gyrfalcon.
Explanation:
Let the eagle is flying at an elevation = x meter
and gyrfalcon is flying at an elevation = y meters
then difference in their elevations = (y-x) meters
1. Now inequality which compares the elevations will be
y - x > 23 - 15
y - x > 8
2. Since gyrfalcon is flying at 23 meters and eagle at 15 meters then the description which is correct.
The eagle is flying at a lower elevation than the gyrfalcon.