Who do you believe is guilty of the murder? What evidence supports your conclusions?

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.

true                                                                                                       true true true true true true

geologic time scale (for gradpoint) =)