In "What Causes Earthquakes," which detail supports the idea that natural earthquakes are more dangerous than man- made ones?
OA. When two rocks slide against each other, they create fault lines.
OB. Explosions big enough to cause a shift in the surface of the Earth are generally caused in mining tunnels or
during nuclear testing.
OC. Whereas normal energy travels above the surface of the Earth, seismic energy travels under the Earth's
surface.
OD. But the seismic energy formed due to these explosions is rarely very strong.