Based on the Theory of Plate Tectonics, you would expect to find heat flow at the mid-ocean ridge and heat flow at subduction zones when compared to other parts of the crust.

Convectional, hydro thermal

Explanation:

The theory of the plate tectonics suggests that the flow of the heat from the mid-oceanic ridges occurs through the upper part of the mantel. This heat flows in a convective pattern as compared to the heat flow of the subduction zones is the hydrothermal flow and is high than compared to the other parts of the crust.

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