The fuel cells are what powers up the spacecraft with regards to its different operations like regulating breathable oxygen and making pot water. The famous incident that the fuel cells got leaked was in the Apollo 13. Their quest to the moon has come to an end when their fuel cells had gone insufficiently to continue the voyage.
<span>They are called seismic gaps. Seismic gaps are a segment of an active fault, they are responsible for production of earthquakes.</span>
Deciduous forest, hope that helps
D. Greece is surrounded by water on almost all sides
