Consult the figure below. Compared with low-grade metamorphic rocks, high-grade rocks __________. A graph shows the temperature and pressure for different metamorphic grades. The graph shows temperature in degrees Celsius in the horizontal axis, ranging from 0 to 900 in increments of 100, pressure in kilobars in the vertical axis ranging from 0 to 10 in increments of 2, and depth in kilometers in the vertical axis, ranging from 0 to 30 in increments of 10. All data are approximate. Non-metamorphic rocks are 0 to 15 kilometers deep. The temperature decreases from 250 to 110 degrees Celsius with increase in depth and the pressure increases from 0 to 5 kilobars. Contact metamorphism occurs at the depth of 2 to 9 kilometers, between 300 and 800 degree Celsius and 0.5 to 2 kilobars. Low grade is between 300 and 400 degrees Celsius, intermediate grade is between 400 and 600 degrees Celsius, and high grade is between 600 and 800 degrees Celsius. Mountain belt metamorphism occurs at the depth of 8 to 35 kilometers, between 300 and 850 degree Celsius and 2 to 10.5 kilobars. Low grade is between 300 and 450 degrees Celsius, intermediate grade is between 450 and 620 degrees