Answer:
:)
Explanation:
Working slowly over many years, groundwater travels along small cracks. The water dissolves and carries away the solid rock. This gradually enlarges the cracks.
<span>Seismic waves are the waves of energy caused by the sudden breaking of rock within the earth or an explosion. They are the energy that travels through the earth and is recorded on seismographs.
Source: OS</span>
I would say the answer is D.
:
<span> tsunamis, earthquakes, volcanoes, rivers, valleys, mountain formation, faults... </span>
