3. Geothermal energy from the Earth's core is powered by which of the following energy sources (in combination with the long-term decay of radioactive elements, like uranium-238)? A. residual heat...

Extracted text: 3. Geothermal energy from the Earth's core is powered by which of the following energy sources (in combination with the long-term decay of radioactive elements, like uranium-238)? A. residual heat from the impact of a Mars-sized planet about 4.5 billion years ago B. electrical energy from photovoltaic cells C. tidal power from the moon's gravity D. hydroelectric power from dams E. solar power from sunlight