Can someone help me!? it's about social studies

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these