Answer:
Convection currents describe the rising, spread, and sinking of gas, liquid, or molten material caused by the application of heat.
Explanation:
THE HEAT ON THE SURFACE OF THE EARTH
compound
"Marble is typically more than 95% calcium carbonate, perhaps even 99% calcium carbonate, and calcium carbonate is a compound. Marble has a good claim to be recognized as a compound."
The graph represents an endothermic reaction.
The products have more energy than the reactants.
80kJ
160kJ
TRUE
