A . anaphase II because the chromatids are moving towards the opposite poles
Scientists continuously find fossilized bodies of dinosaur bones that all appear to have died the same way. It is because of these discoveries that we know that dinosaurs and other pre-historic species existed on Earth 66 million years ago.
The slab sinks faster and this pulls on the rest of the plate, continuing plate tectonics. Mantle convection creates the instability that allows plate tectonics to get going and helps a little, but it's not thought to be the main driving force
