A change in the core would have the greatest effect on the convection currents in the mantle. Hope this helped!
Answer:
<em>Alternative Energy refers to energy sources other than fossil fuels. This includes all renewable sources and nuclear. Nuclear is not classified as a renewable energy source. A renewable energy source is produced from sources that do not deplete or can be replenished</em><em> within a human’s lifetime. Nuclear is produced from mined elements like uranium and thorium which cannot be replenished.</em>
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I Hope this will help you if not then Sorry, have a great day :)</h3>
Economic Reconstruction
Hope this helps and if it does give me a thanks :)