Answer :
Nuclear radiation in Earth's core; matter heats and moves upwards; then cool areas of the mantle move down.
What is convection?
The term convection has to do with the situation in which there is a transfer of heat energy by the actual movement of the particles of the substance. We know that convection occurs within Earth’s layers.
The statement that correctly describes the movement of heat in the convection of the earth's layers is; nuclear radiation in Earth's core; matter heats and moves upwards; then cool areas of the mantle move down.
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