Select all the northeast states. a. delaware b. new hampshire c. north carolina d. oklahoma e. pennsylvania f. rhode island g. vermont h. west virginia

B, E, F, G
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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.