Neanderthal was not at the top of the food chain. What new competitor came on the scene about 35,000 years ago that signaled the end for Neanderthal?

The answer is false

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.