Which one of the following is NOT part of our solar system? a. Pluto

b. asteroids

c. moon

d. dwarf stars

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.

Answerstratovolcanoes///near or in the ring of fire;