Question

Why is groundwater an important source of freshwater storage?
a.
It constitutes approximately 30% of Earth’s freshwater.
b.
It is the only viable source of freshwater in some areas.
c.
It is available in conditions of drought.
d.
All of the above

Answer 1

d. All of the above

Groundwater makes up roughly 30% of Earth's freshwater, is the primary or only practical freshwater source in some regions, and often remains available during droughts when surface water supplies decline.