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5 votes
What kind of energy source transforms heat energy from the Earth into mechanical and electrical energy?

a. Geothermal
c. Solar
b. Hydro-electric
d. Turbine

2 Answers

1 vote
It is the Geothermal energy which transforms heat energy from the earth into mechanical and electrical energy.
5 votes
I think it would be geothermal considering its word roots. Hydro-electric is from water, solar is from the sun, and turbine is from wind.