Which North Carolina city is located at approximately 34.3º N, 77.9º W?

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 volcanic eruptionsseismic waves from earthquakes;