Causes of non delivery of rdp housing

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.

The correct answer should be brand c.

Answermost of the time it would be ground into fine sediment,and sometimes they are carried away from the original location;