(d) Rocks
Reason — At some places, rocks below the surface of the earth are very hot. Such places are known as hot spots. The heat energy possessed by rocks inside the earth is called geothermal energy.
(d) Rocks
Reason — At some places, rocks below the surface of the earth are very hot. Such places are known as hot spots. The heat energy possessed by rocks inside the earth is called geothermal energy.
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