(3) Why tires can become over inflated when run on hot desert surfaces.

The clear, dry air and sparse plant cover allow sunlight to heat the desert surface.

Almost half of Earth's desert surfaces are stony deflation zones.

This cooler and denser air sinks toward the desert surface.

It would, in fact, roll its gigantic body to bring the opened segment as far away from the desert surface as possible.

In the distance, over the irregular crusted desert surface, knelt Samena.

Its side walls led up the desert surface just three meters above the hollow's floor at an angle of roughly 30 .

"Are we moving vertically or horizontally in respect to the desert surface?"

They turned the mantids and followed the turtle, which had to back down part of the way, to the desert surface once more.

Until then the tyres had ridden on the desert surface.