Latin is called a "dead language," and in a way this is true: There are no speakers left who learned Latin as a native language. Latin is survived by its descendants, including Spanish, Italian, and French; and Latin is taught in schools. Do you think Latin is dead? Ainu is a language spoken by just a few people in the far north of Japan. There are no languages known to be related to Ainu. If Ainu ceases to be spoken, do you think it will be dead in the same way as Latin?

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust. 

Ithink its b but i'm not sure.

Judasim,christianity,islamic