The answer is; geysers
Due to the water underground being heated from geological reason such as heat from magma chambers, the water heats up and expands. The pressure of the rock above the water causes it to reach very high pressures. The water finds cracks and fissures in the rocks above until it reached the surface. The pressure releases and the water eject from the ground into a hot fountain.
Mitochondria is the part responsible for making the ATP for the cells.
