True or false Climate, physical features, and natural resources have almost no bearing on population distribution and settlement.

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.

I'm going to say it's 5-6 million