Answer:
1. convection currents happen in the mantle
2. heated mantle material rises as cooled material sinks causing a convection motion which moves the plates on the Earth's crust resulting in movement of the tectonic plates Earth's crust
Explanation:
the second question is just a rephrased version of "how do convection currents in the mantle conflict with the tectonic plates" you just explain how the convection currents move the tectonic plates.