How did a wag more than 600 years ago contribute to the causing ethnic conflict beginning again in the 1990s

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.

Answer the collision of tectonic plates;

Developed countries will see a decrease in natural resources, because their population will decrease.