How many cubic kilometers of water reside within groundwater? How many more times abundant is groundwater than water on land? These are the figures.
Groundwater = 8.4
(Each unit is one million cubic kilometers x 1,000,000 km3)
Water on land = 0.2
Groundwater = 8.4
(Each unit is one million cubic kilometers x 1,000,000 km3)
Water on land = 0.2