Why is oil so important to the arabian peninsula?

Oil is basically the only valuable natural resource many countries in the Arabian peninsula have. The income provided by oil sustains their economies and without it, they would be poor, underdeveloped nations. With oil as valuable as it is today, these nations are becoming richer than many...

It is the primary source of income for those countries.

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.