The 7 continents were once thought to be one big land mass that broke apart like a jigsaw puzzle. true or 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.

Answerincreases;