The wings of a fly can only move a small amount of air, and at higher altitudes the thinner air would support less weight. In addition, there is much less oxygen above 10,000 ft (3 km) or so. The...
Fly fly.
How high can a little fly FLY? Is that what you mean?
It can fly as high as a little fly can fly.
Answer.
The littles are ground bound. They cannot fly. Certainly there is the...