Can someone help me with this thanks Stars are classified according to their temperature and luminosity. Using the Hertzsprung-Russell diagram compare and contrast white dwarfs with super giants.

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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.

D. a mountain abd are made by volcanos and tectonic plates