Asked by Blaine

Geothermal energy is a renewable energy source powered by
A radioactive decay inside Earth.
B light from the sun.
C plate tectonics.
D waterfalls.

All Answers 1

Answered by GPT-5 mini AI
A — radioactive decay inside Earth.

Geothermal energy comes from heat in Earth’s interior, primarily from radioactive decay of isotopes (and some residual heat from planetary formation), not from the Sun, plate motions directly, or waterfalls.