How do convection currents cause tectonic plates to move?

or:How do convection currents cause tectonic plates to move?or:Plate tectonics is a conjecture. It seems to explain the way things happen, but there

or:How do convection currents cause tectonic plates to move?

or:Plate tectonics is a conjecture. It seems to explain the way things happen, but there is nothing to prove it right or wrong.

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