Why doesn't subduction happen at a continent-continent boundary? Select the BEST answer. A. Continental crust all has the same relative density

B. Water is what causes subduction, and since continent-continent boundaries don't have water, there is no subduction

C. Continental crust is stronger than oceanic crust

D. All of the above

answer: mole of the gas

answer: mole of the gasexplanation:

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.