Which of the following is NOT true about geothermal gradients?

W) The gradient beneath continent crust is less steep than under oceanic crust

X) They vary with tectonic environments

Y) They are largely determined by the way that pressure and temperature vary in the Earth

Z) The "normal" geothermal gradient in the upper part of Earth is 25'C/km [w twenty-five degrees Celisus per kilometer]
W) THE GRADIENT BENEATH CONTINENT CRUST IS LESS STEEP THAN